Publications (1998-2007)

Solid State Physics

E.Kashchieva , B.Shivachev , «Computer modelling of vitreous B₂O₃ structure», Glastech. Ber.Glass Sci.Technol.71C (1998) 389.

B.Samuneva, R.Hill, Y.Dimitriev, Y.Ivanova, E.Kashchieva , S.Stefanova, S.Kalimanova, «Phase formation in the gels of composite glass-ceramics», ibid. p. 460.

M.Bursukova, Y.Ivanova, E.Kashchieva , Y.Dimitriev, «Electron diffraction sudy of short range order in glasses obtained by sol-gel method», ibid. 317.

E.Kashchieva , Y.Dimitriev, «Phase separation in ternary borate glasses», Proc. XVIII-th Int. Congress on Glass, San Francisco, California, USA, 1998, CD-ICG592-PO1-186.

Y.Dimitriev, B.Samuneva, E.Kashchieva , E.Gattef , D.Wood, «Microstructure of glasses and glass-ceramics in system Al₂O₃-SiO₂ obtained by sol-gel method», ibid. CD-ICG535-EO1-004 .

K.Ignatova, L.Nikolova, E. Kashchieva , «Joint effect of pulse electrolysis and an organic additive on the morphology of silver powder», Bull. Electrochem. 14, 19 (1998) 315.

P.Djambaski, E.Kashchieva , «Multilayer coatings on optical glasses», Anal. Lab. 7 (2) (1998) 85.

B.Samuneva, Y.Dimitriev, V.Dimitrov, E.Kashchieva and G.Encheva, «Silica gels and gel-glasses containing silver and platinum metal particles», J. Sol-Gel Sci. Technol.13 (1998) 969.

M.Bursukova, Y.Ivanova, E.Kashchieva , Y.Dimitriev, «Electron diffraction study of binary borate-silicate glasses synthesized by sol-gel technology», Proc. 5-th ESG Conf. Glass Sci. Technol. for the 21-st Century, Eds. A.Helebrant, M.Maryska, S.Kasa, Czech Glass Soc., Prague 1999,ISBN 80-238-3861-X, CD-ROM, p. C3-34-C3-40.

E.Kashchieva , Y.Dimitriev, «Nano-scale heterogeneities in binary borate glasses containing TeO₂, PbO and Ag₂O», ibid. p. B4-65-B4-68.

M.Bursukova, E.Kashchieva , Y.Dimitriev, «Precision of the electron diffraction for short range order study tested by SiO₂», Proc. XIII-th Conf. on Glass and Ceramics, Varna, Eds. B.Samuneva, S.Bachvarov, I.Gutzov, Y.Dimitriev, «Science Invest », Sofia, 1999, 1, p.108.

E.Kashchieva , V.Ivanova , B.Jivov, P.Petkov , Y.Dimitriev, «Structure-property correlation in lead-borate composites with participation of PbMoO₄», ibid. p.159.

B.Samuneva, R.Hill, E.Kashchieva , Y.Ivanova, E.Kadijska, «Phase formation and compatibility of composite materials based on fluorapatite and gel glasses», ibid., p.193.

B.Jivov, Y.Dimitriev, E.Kashchieva , «Phase formation in the system P₂O₅-CaO-ZnO-Ag₂O», ibid., p.205.

E.Kashchieva , Y.Ivanova, Y.Dimitriev, «Gel materials in the system B₂O₃-ZnO», ibid, p.211.

Y.Nedeva , P.Petkov , E.Kashchieva , «Thin films in the Ge-Se-Ga system», ibid., p.294.

E.Kashchieva , P.Djambaski, B.Samuneva, «Electron microscopic investigations of sol-gel color coatings on glass», ibid, p.216.

M.Bursukova, E.Kashchieva , Y.Ivanova, Y.Dimitriev, «Electron diffraction study of B₂O₃ glasses obtained at different cooling rates», Phys. Chem. Glasses 41, 6 (2000) 337.

E.Kashchieva , V.Ivanova , B.Jivov, Y.Dimitriev, «Nano-structured borate glass-ceramics containing PbMoO₄», ibid. p. 355.

Y.Ivanova, E.Kashchieva , Y.Dimitriev, «Sol-gel synthesis of glasses in the systems B₂O₃-M_nO_m (M=Li, Ba, Zn)», ibid. p. 349.

B.Jivov, Y.Dimitriev, E.Kashchieva , C. Petkov, «Glasses and glass ceramics in the system P₂O₅-B₂O₃-Ag₂O», ibid. p. 352.

B.Jivov, E.Kashchieva , Y.Dimitriev, «Influence of the silver on the phase formation in the system P₂O₅-CaO-ZnO», Phosphorus Research Bulletin 11 (2000) 127.

B.Jivov, Y.Dimitriev, E.Kashchieva , «Glass-crystalline materials in the system P₂O₅-CaO-ZnO-Ti, Intern. J. Inorg. Mater. 3 (2001) 521.

E.Kashchieva , M.Pankova, Y.Dimitriev, «Liquid phase separation in the systems TeO₂-B₂O₃-M₂O₃(M₂O₃=Al₂O₃, Ga₂O₃, Sc₂O₃, La₂O₃, Bi₂O₃), Ceramics-Silikaty 45, 3 (2001) 111.

R.Iordanova, Y.Dimitriev, E.Kashchieva , D.Klussurski, «Glasses in B₂O₃-V₂O₅ the system», ibid. p. 115.

E.Kashchieva , Y.Ivanova, V.Ivanova , S.Nedev , Y.Dimitriev, E.Leftertova, «Microstructure of glasses and glass-cristalline materials in the systemTeO₂-V₂O₅-Ag₂O-AgI», J. Optoel. Adv. Mater. 3 (2001) 747.

E.Кашчиева , В.Иванова , Я.Димитриев, Микроструктура на стъкла от системата ТеО₂-B₂O₃-Fe₂O₃, Научни трудове на Русенския Университет «Ангел Кънчев», 38, 10 (2001) 158.

B.Shivachev , E.Kashchieva , Y.Dimitriev, «Computer simulations of RDF curves for nanoclusters in vitreous B₂O₃», Nanoscience & Nanotechnology'02, Eds. E.Balabanova, I.Dragieva, Heron press, Sofia, 2002, p. 75.

E.Kashchieva , V.Ivanova , Y.Dimitriev, A.Kordov , I.Nedkov, T.Merodiiska, «TeO₂-B₂O₃-Fe₂O₃, glasses as a matrix for ferromagnetic nanocomposites», ibid. p. 94.

V. Ivanova , E. Kashchieva , Y. Ivanova, Y. Dimitriev, «Nanocomposites based on lead-borate gel glasses», ibid. p.97.

G.Encheva, B.Samuneva, P.Djambaski, E.Kashchieva , I.Mitov, D.Paneva, «Sol-gel synthesis of nanomaterials and coloted gels in SiO₂-Fe₂O₃ system», ibid. p. 22.

V.Zaprianova, R.Raicheff, E.Kashchieva , «Electrochemical corrosion of amorphous and nanocrystalline Fe₇₈B₁₃Si₉ alloys», ibid. p. 144.

E.Kashchieva , Y.Dimitriev, «Structure microheterogene de verres», J. UCTM - Sofia, XXXVII, 5 (2002) 227.

B.Shivachev , E.Kashchieva , Y. Dimitriev, «Simulation de la structure des verres a la base de B₂O₃ », ibid. p. 235.

B.Samuneva, S.Kalimanova, E.Kashchieva , P.Djambaski, «Composite glass-ceramics in the systems MgO-SiO₂, MgO-Al₂O₃-SiO₂ and fluorapatite obtained by sol-gel technology», J. Sol-Gel Sci. Technol. 26 (2003) 273.

B.Samuneva, E.Kashchieva , Y.Ivanova, E.Kadiyska, «Crystallization processes in composite biomaterials», ibid. p. 1203.

U. Hoppe, R. Kranold, E. Gattef , «An X-ray diffraction study of the structure of vitreous V₂O₅», Solid State Communications, 108 (1998) 71.

B. Samuneva, V. Dimitrov, S. Kalimanova, E. Gattef , R. Hill, «Crystallization of gels in the apatite-mulite system», J. Sol-Gel Sci. Technol. 13 (1998) 951.

A.Staneva, E. Gattef , Y. Dimitriev, «Short range order of glasses in the systems MnO-B₂O₃ and PbO-MnO-B₂O₃», Phys. Chem. Glasses 41, 6 (2000) 403.

C.E.Stone, A.C.Wright, R.N.Sinclair, S.A.Feller, M.Affatigato, D.L.Hogan, N.D.Nelson, C.Vira, Y.B.Dimitriev, E.M.Gattef , D.Ehrt, «Structure of bismuth borate glasses», Phys. Chem. Glasses 41, 6 (2000) 409.

I.B.Gugov , «Computer simulation of the structural relaxation in strong and fragile oxide melts», Proc. XIII-th Conf. on Glass and Ceramics, Varna, Eds. B.Samuneva, S.Bachvarov, I.Gutzov, Y.Dimitriev, «Science Invest », Sofia, 1999, 1, p. 97.

D.S.Yankov and I.B.Gugov, «Comparative study of glucoamylase immobilization onto porous inorganic supports», Bulgarian Chemical Communications 31 (1999) 105.

H.Burger and I.Gugov , «Short range order of tellurite crystals, melts and glasses», Glastech. Ber. Glass Sci.Technol. 71C (1998) 321.

P.Petkov , C.Vodenicharov , C.Kanasirski , «On the evaporation process in Ge-Se-Tl system», Phys. Stat. Sol. (a) 168 (1998) 447.

P.Petkov , S.Parvanov , C.Vodenicharov , «Investigation of structural changes in GeSe thin films by acoustic emission», J. Mater. Lett. 41 (1999) 27.

S.Parvanov , P.Petkov , C.Vodenicharov , «D.C. conductivity in the thin films: Al-(Ge-Se-B)-Al structures», Thin Solid Films 357 (1999) 242.

V.Vassilev, P.Petkov , V.Vachkov, S.Bojcheva, «Electrical and optical properties of thin films in the Ag₂Te-Cd-Te system», J. Mater. Lett. 41 (1999) 278.

P.Petkov , T.Petkova, «Structural model for thin (GeSe₅)_1-xTl_x films», Semiconductor Science and Technology 15 (2000) 331.

P.Petkov , S.Parvanov , Y.Nedeva , E.Kashchieva , «Kinetics of the evaporation and condensation of boron containing chalcogenide glasses», Phys. Chem. Glasses 41, 6 (2000) 377.

S.Boycheva, P. Petkov , V. Vasilev, «Optical constants of thin GeSe₂-CdI₂(Sb₂Se₃)-CdSe films»», J. Appl. Electromagn., 6 (2000) 98.

P.Petkov , Z. Ivanova, V. Vasilev, «D.C. conductivity of amorphous (GeS₃)_100-xGa_x thin films», Thin Solid Films, 396 (2001) 210.

V. Vasilev, V.Vachkov, I.Markova, P.Petkov , «Phase equilibria in the InSb-SnTe system», Meter. Lett. 48 (2001) 104.

Y. Nedeva , T. Petkova, E. Mitylineou, P. Petkov , «Compositional dependence of the optical properties of the Ge-Se-Ga glasses», J. Optoel. Adv. Mater., 3 (2001) 433.

Z. Ivanova, P.Petkov , V. Vasilev, «Optical and electrical properties of amorphous (GeS₂)_100-xGa_x thin films», ibid. p. 481.

S.Boycheva, V. Vasilev, P. Petkov , «New chalcogenide glasses in the GeSe₂-As₂Se₃-CdTe system», ibid. p. 503.

T. Petkova, Y. Nedeva , P. Petkov , «Compositional trends of the properties in the Ge-Se-Ga chalcogenide glasses», ibid. 855.

P.Petkov , «Multicomponent germanium chalcogenide glases», J. Optoel. Adv. Mater. 4 (2002) 747.

V. Vasilev, S. Boycheva, P.Petkov , «New chalcogenida glasses in the GeSe₂-Sb₂Se₃-CdTe system», Mater. Lett. 52 (2002) 126.

P.Petkov , I.Iliev, T.Petkova ,V.Vasilev,, «New complicated ceramic materials for microwave resonators», J. Optoel. Adv. Mater. 5 (2003) 117.

P.Petkov , T.Petkova ,V.Vasilev,V.Vachkov, «Electrical and optical properties of thin Ag₂Te-ZnTe films», Mater. Lett. 56 (2002) 9.

C.Popov, P.Petkov , Y.Nedeva , P.Ilchev , W.Kulisch, «Stress investigations of thin amorphous Ge-Se-Ga films», J. Appl. Phys. A 76 (2003) 1.

I.Iordanova, K.Forcey, R.Harizanova , Y.Georgiev, M.Surtchev, «Investigation of structure and composition of surface oxides in a high chromium martensitic steel», J. Nucl. Mater. 257 (1998) 126.

L. Shivachev, I. P. Mincov, E. P. Kashchieva, Y. B. Dimitriev, R. Smith and T. Troev, Positron lifetime spectroscopy of vitreous B2O3 , J. Non-Cryst. Solids 345&346 (2004) 108-111.

G.Encheva, B.Samuneva, P.Djambaski, E.Kashchieva, D.Paneva, I.Mitov, Silica gels containing transition metal oxides, J. Non-Cryst. Solids 345&346 (2004) 615-619.

E.Kashchieva, B.Shivachev, Y.Dimitriev, Molecular dynamics studies of vitreous boron oxide, J. Non-Cryst. Solids 351 (2005) 1158-1161.

E.Kashchieva, V.Ivanova, B.Tasseva, Y.Ivanova, Y.Dimitriev, Microheterogeneous structure of melted and gel glasses in the system PbO-B2O3, J. Optoel. & Adv. Mater. 7, 1 (2005) 397-400.

B.Shivachev, E.Kashchieva, Y.Dimitriev, DFT calculations of cluster formations in vitreous B2O3, Phys. Chem. Glasses 46 (2) (2005) 253 - 255.

E.Kashchieva, V.Ivanova, B.Shivachev, S.Nedev, Y.Dimitriev, Immiscible oxide glasses as convenient medium for obtaining of nanocomposite materials, Nanoscience & Nanotechnology, 5, Eds. E.Balabanova, I.Dragieva, Heron Press, Sofia, 2005, p. 51 - 53.

D.Todorovski, R. Todorovska, N. Petrova, M.Uzunova-Bujinova, M.Milanova, S.Atanasova, E.Kashchieva, S.Tepavitcharova, Spray pyrolysis, deep and spin-coating deposition of thin films and their characterization, J. Univ. Chem. Technol. Met., Sofia, 41, 1 (2006) 93-96.

E.Kashchieva, D.Ilieva, Y.Dimitriev, M.Bursukova, Sv.Nedev, Heterogeneous structure of glasses from the system B2O3-TeO2-GeO2, Nanoscience & Nanotechnology 6, Eds. E.Balabanova, I.Dragieva, Heron Press, Sofia, 2006, p. 184-187.17. E. Kashchieva, V. Ivanova, D. Ilieva, Y. Dimitriev, Heterogeneous structure in TeO2-GeO2-V2O5 glasses, in Proc. Int. Sci. Conf. UNITECH, 24-25 Nov. 2006, Gabrovo, Vol. 3, p. 418-421. 18. R.Kirov, E.Kashchieva, Y.Dimitriev, S.Tsaneva, Kh. Basamakov, Study of enamelet applications from an ancient Thracian chariot from Assenovgrad, Bulgaria, J. Univ. Chem. Technol. Met., Sofia, 41, 4 (2006) 427-431.

V.Ivanova, E.Kashchieva, Y.Dimitriev, Nanocomposites based on immiscible borate glasses, Functional properties of nanostructured materials, Eds. R. Kassing et al., Springer Printed, Netherlands (2006) 173-176.

Y. Dimitriev, E. Kashchieva, R. Iordanova, Glass formation and microheterogeneous structure in the B2O3-MoO3-MenOm (Me=W, Mn, Cu) systems, Physics and Chemistry of Glasses: European Journal of Glass Science and Technology Part B, 47 (4), (2006) 435-440.

E. Kashchieva, Y. Dimitriev, D. Ilieva, R. Iordanova, Heterogeneous structures of glasses in the systems GeO2-TeO2-MnOm (MnOm=B2O3, V2O5), Physics and Chemistry of Glasses: European Journal of Glass Science and Technology Part B, 48 (3), (2007) 151-153.

E. Kashchieva, Y. Dimitriev, D. Ilieva, R. Iordanova, Heterogeneous structures in binary B2O3-rich glasses, Proc. XXI-st International Congress of Glass - ICG 2007, July 1-6, 2007, Strasbourg, France, CD, Section 1, Structure, A 32.

A. Vodenicharova-Nedelcheva, R. Iordanova, Y. Dimitriev, E. Kashchieva, Nanoparticles in low melting amorphous selenite materials, J. Mater. Sc. 42 (2007) 3378-3382.

S. Atanasova, M. Milanova, E. Kashchieva, H. Funakubo, T. Kamo, N. Grozev, P. Stefanov, D. Todorovsky, Morphology of Sol-gel produced composite films for optical oxygen sensors, Appl. Surface Sci. 254 (2008) 1545-1558.

Petkov P.,Wuttig M.,Ilchev P. and Petkova T. (2003) : Optical band gap of thin gallium containing telluride films, J.Optoel.Adv.Mat., 6 1103.

Petkova T.,Petkov P. and Nedeva Y. (2004) : Structural investigations of ternary chalcogenide galsses, Surf.&Interf. Anal., 36 899.13. Petkova T.,Petkov P. and Ilchev P.(2004) : Atomic dynamics of Ge-Te-Ga glasses, Phys.Chem.Glass., 53 817.

Vassilev V.,Popov C.,Boycheva S.,Petkov P.,Aljihmani L.,Kolev K. and Monchev B.(2004) : Deposition, morphology and stress investigation of amorphous ËAs2Se3-Ag4SSe-SnTe thin films, Mat.Lett., 58 3802.

Boycheva S.,Vassilev V.,Petkov P. and Nedeva Y. (2005) : Optical characteristics of thermally evaporated GeSe2-Sb2Se3-ZnSe thin films, Mat.Lett., 59 1521.

Vassilev V., Popov P.,Boycheva S.,Petkov P.,Aljihmani L., Monchev B. and Kolev K. (2005) : Optical characterization of As2Se3-Ag4SSe-SnTe amorphous thin films, J.Non-Cryst.Sol., 351 299.

Monchev B.,Petkov P.,Petkova T. and Popov C.(2005) : Optical properties of thin Ge-S-AgI films, J.Optoel.Adv.Mat., 7 1293.

Petkov P.,Vassilev V.,Petkova T.,Monchev B. and Algihmani L. (2005) : Optical properties of ternary chalcogenide SnTe containing thin films, J.Optoel.Adv.Mat., 7 1427.

Popov C.,Boycheva S.,Petkov P.,Nedeva Y., Monchev B. and Parvanov S. (2006) : Stress formation in amorphous Ge-Se and Ge-Se-Ga(Tl,B) thin films, Thin Solid Films, 496 718. Petkov P., Parvanov S., Petkova T. (2006) : Electron transport in amorphous (GeSe5)1-xBx films , J.Optoel.Adv.Mat., 8 78.

G.Volksch, R.Harizanova, C.Russel, S.Mitsche, P.Polt, Crystallization of High Iron Containing Silicate Glasses - Electron Microscopy Investigation, Glastech. Ber. Glass Sci. Technol., 77C (2004) 438-441.2006

R. Harizanova, Crystallization Behaviour of High Iron-Containing Вorosilicate Glasses, Сборник доклади от Четвърта национална младежка научно-практическа сесия 2006, 19-21 Май, 2006г., София, 182-187.

R.Harizanova, R.Keding, G.Volksch, C.Russel, Influence of the Composition and the Thermal History on the Microstructure and Conductivity in the System Na2O/CaO/SiO2/Fe2O3, Nanoscience and Nanotechnology, 6, Eds.: E. Balabanova, I. Dragieva, Heron Press, Sofia, 2006, 188-190.

R. Harizanova, Investigation of the Microstructure of Borosilicate Glasses Containing Transition Metal Oxides, Proceedings of the International Scientific Conference UNITECH'06, 24 - 25 November 2006, Gabrovo (Bulgaria), Vol. III, 381-384.2007

Ruzha Harizanova, Phase separation and crystallization in borosilicate glasses containing transition metal oxides, NANOSCIENCE AND NANOTECHNOLOGY, issue 7, 2007, p. 153, Edited by E. Balabanova and I. Dragieva.2007

R.Harizanova, R. Keding, C. Ruessel, Electric conductivity of glasses in the system Na2O/CaO/SiO2/Fe2O3, J. Non-cryst. Sol. 354 (2008), p. 65-71.

U. Hoppe, I. Gugov; H. Burger, P. Jovari, A.C. Hannon, Structure of tellurite glasses - effect of K2O and P2O5 additions studied by diffraction, Journal of Physics - Condensed Matter, 17 (15) (2005) 2365-2386.

W. Seeber, R. Grunwald, U. Neumann, I. Gugov, and M. Muller, High-performance materials based on nonlinear optical composites of ZnO-nanolayers and RE-doped oxyfluoride glasses, 8th International Otto Schott Colloquium, July 23 - 27, 2006, Jena, Germany, Proceedings P 83.

R. Garkova, I. Gugov, C. Russel, Precipitation of In2O3 nano-crystallites from glasses in the system Na2O/B2O3/Al2O3/In2O3, Journal of Non-crystalline Solids, 320 (1-3) (2003) 291-298.

Physics of the polymers

J.Abuto, I.Alricl, D.Bikiaris, J.Prinos, M.Botev, C.Betchev , C.Panayiotou, «Mechanical properties and biodegradability of LDPE blends with fatty-acid esters of amylose and starch», J. Appl. Polymer Sci. 71 (1999) 1089.

M.Botev, C.Betchev , D.BiIkiaris, ËC.Panayiotou, «Mechanical properties and viscoelastic behavior of basalt fibres Ëreinforced polypropylene», J. Appl. Polymer Sci. 74 (1999) 523.

V.Velev, C.Betchev , «Calorimeter for studies of the oriented polymers under simultaneous thermal and mechanical treatments», Polymer Testing 19 (2000) 281.

M.Koleva, Ch.Bechev , S.Petkov, «Characterization of polyester resins solydification process by the method of mechanical impedance», Polymer Testing 21 (2000) 122.

M. Koleva, C. Bechev , «Viscosimetric investigation of unsaturated polyester resin - high impact polyester», J. Theoretical and Applied Mechanics 34, .4 (2001) 344 .

V. Velev, R. Androsch, H-J. Radusch, C. Bechev , «Study of As-spun poly(ethylene terephtalate) fibres subjected to thermal and mechanical treatments», Macromolecular Materials and Engineering 286, 12 (2001) 755.

G.S.Cholakov, K.G.Stanulov, P.Devenski , H.A.Iontchev, «Quantitative estimation and prediction of tribological performance of pure additive compounds through computer modeling», Wear, 216 (1998) 194.

S.Parvanov, V.Vassilev, L.Aljihmani, "Electrical properties of amorphous As2Se3-GeSe2-SnTe thin films", Journal of Optoelectronics and Advanced Materials,vol.7, №3, (2005).

V.Vassilev, S.Parvanov, T.Hristova-Vasileva and all, "Glass formation in the As2Te3-As2Se3-SnTe system", Materals Letters, 61(2007)3676-3678.

V.Vassilev, K.Tomova, S.Parvanov, V.Parvanova, "New Chalcogenide glasses in the GeSe2-Sb2Se3-PbSe system", Materials Chemistry and Physics, 103(2007)312-317.

V.Vassilev, K.Tomova, S.Parvanov, "Phase equilibria in the GeSe2-PbTe system",Thermochimica Acta, 459(2007)12-16.

V.Vassilev, S.Parvanov, T.Hristova-Vasileva and all, "Glass formation in the As-Te-Sb system", Materials Chemistry and Physics, 105(2007)53-57.

High Energy Physics

L.S. Azhgirey ... S.Nedev et al., "Tensor Analyzing Power T₂₀ n Backward Elastic dp Scattering and Deuteron Breakup at 0o between 3.5-6.5 GeV/c", Physics Letters, B391(1997), p. 22.

L.S.Azhgirei, V.V.Vikhrov, S.A.Zaporozhets, A.P. Kobushkin, V.P. Ladygin, S.Nedev , L.Penchev, C.F.Perdrisat, N.M.Piskunov, V.Punjabi, G.D.Stoletov, E.A.Strokovskii, A.I.Syamtomov, E.V.Chernykh, L. Vizireva , «Tensor analyzing powers in the reactions p(d,p)d and p(d,p)pn at zero angle for incident-deuteron momenta between 3.5 and 6.5 GeV/c», Nuclear Physics v.61, N3 (1998) 494.

L.S. Azhgirei, E.V.Chernykh, A.P.Kobushkin, P.P.Korovin, B.Kuehn, V.P.Ladygin, S.Nedev , L.Penchev, C.F.Perdrisat, N.M.Piskunov, V. Punjabi, I.M.Sitnik, G.D.Stoletov, E.A.Strokovskii, A.I.Syamtomov, S.A.Zaporozhets, «Tensor analyzing power T₂₀ in inelastic (d,d')X scattering at 0^o on ¹H and ¹²C from 4.5-GeV/c to 9. GeV/c», JINR Rapid Comm. 2 [88] (1998) 17.

I.Sitnik, C.F.Perdrisat, E.Tomasi-Gustafsson, L.S.Azhgirei, J.Ball, L.Bimbot, Y.Bisson, M.Boivin, Yu.T.Borzunov, J.L.Boyard, P.Courtat, R.Gacougnolle, M.Garcon, L.B.Golovanov, T.Hennino, M.Jones, D.A.Kirillov, R.Kunne, L.V.Malinina, S.Nedev , N.M.Piskunov, V.Punjabi, M.P.Rekalo, J.L.Sans, R.Skowron, E.A.Strokovsky, J.Yonnet, «Measurement of the deuteron tensor polarization at the ³He ® d + p vertex up to internal momenta of 0.43 GeV/c.», Nucl.Phys. A 663 (2000) 443.

N.S. Amaglobeli...Nedev et al. , «Experimental estimation of the charm production cross section in pp interactions at 70-GeV/C with the aid of the SVD SETUP», Phys. Atom. Nucl. 64 (2001) 891, Ядр. Физика 64 (2001) 958.

L.S.Ladygin and S.Nedev , «Optimization of the setup for the investigation of the light nuclei spin structure at internal target of the nuclotron», Particles and Nuclei Letters 2, 111 (2002) 13.

F. Hinterberger, S.Nedev, R. Siudak, "The final state interaction in the reactions pp ® K+ Lp and pp ® p+(np)", International Journal of Modern Physics A, vol.20(2005), p.291-300.

M.Abdel-Bary ... S.Nedev et all.,"Detailed comparison of the pp ® p+pn and pp ® p+d reactions at 951 MeV", Physics Letters B610(2005), p.31.

M.Abdel-Bary ... S.Nedev et all.,, A precision determination of the mass of the eta meson" Physics Letters", B619(2005), p.281.

T. Uesaka ... S.Nedev et al.,"Proposal on the measurements of d-p elastic scattering analyzing powers at 0.3-2.0 GeV at internal target station of the nuclotron", Physics of Particles and Nuclei Letters v.3, N5, 2006, p.305.

K. Kilian ... S.Nedev et al."A large acceptance scintillator detector with wavelength shifting fibre read-out for search of eta-nucleus bound states", Nuclear Instruments and Methods, A578, pp198-206, 2007.

Generation of power microwave emission

I.G.Yovchev , K.G.Kostov, J.J.Barroso, and N.A.Nikolov, «Power and efficiency enhancement of reflex-triode virtual-cathode oscillator operating at short pulse», IEEE Trans. Plasma Sci. 26, (1998) 767.

J.J.Barroso, K.G.Kostov, and I.G.Yovchev , «A proposed 4 GHz, 60 kW transit-time oscillator operating at 18 kV beam voltage», IEEE Trans. Plasma Sci., 26, 5 (1998) 1520.

K.G.Kostov, I.G.Yovchev , and N.A.Nikolov, «Numerical investigation of microwave generation in foilless diode vircator», Electron. Lett., 35, 19 (1999) 1647.

I.G.Yovchev , W.Lawson, G.S.Nusinovich, V.L.Granatstein, and M.Castle, «Present status of a 17.1 GHz four-cavity frequency-doubling coaxial gyroklystron design», 8-th Special Issue of the IEEE Trans. Plasma Sci. on High Power Microwave Generation (2000) 523.

I.G.Yovchev , G.S.Nusinovich, W.Lawson, V.L.Granatstein, and S.E.Gouveia, «Designs of three-cavity frequency quadrupling coaxial gyroklystrons», Proc. of the 9-th Workshop on Advanced Concept Accelerators, Monterey CA, June 5- 9, 2000.

I.G.Yovchev , Numerical study of gyroklystrons Workshop on Powerful Gyrodevices, 5-7 March 2001, Lausanne, Switzerland.

M. Q. Tran, S. Alberti, A. Arnold, D. Bariou, E. Borie, G. Dammertz, C. Darbos, O. Dumbrajs, G. Gantenbein, E. Giguet, R. Heidinger, J.-P. Hogge, S. Illy, W. Kasparek, C. Lievin, R. Magne, G. Michel, B. Piosczyk, M. Thumm, I. Yovchev, Development of High Power Gyrotrons for Fusion Plasma Applications in the EU (Plenary Talk), Conf. Digest of the 2004 Joint 29th Int. Conf. on Infrared and Millimeter Waves and 12th Int. Conf. on Terahertz Electronics, Karlsruhe, Germany, Sept. 27 - Oct. 1, 2004, p. 59.19.

I. Yovchev, J.-P. Hogge, T. Goodman, S. Alberti, and T. M. Tran, Design of the ITER 170 GHz Gyrotron Gun (Poster Session), Conf. Digest of the 2004 Joint 29th Int. Conf. on Infrared and Millimeter Waves and 12th Int. Conf. on Terahertz Electronics, Karlsruhe, Germany, Sept. 27 - Oct. 1, 2004, p. 645.20.

J.-P. Hogge, S. Alberti, A. Arnold, D. Bariou, P. Benin, T. Bonicelli, A. Bruschi, R. Chavan, S. Cirant, R. Claesen, O. Dumbrajs, D. Fasel, F. Gandini, E. Giguet, T. Goodman, R. Heidinger, M. Henderson, S. Illy, J. Jin, C. Lievin, X. Llobet, R. Magne, P. Marmillod, P.-L. Mondino, A. Perez, B. Piosczyk, L. Porte, T. Rzesnicki, M. Santinelli, M. Thumm, M. Q. Tran, I. Yovchev, Development of a 2 MW, CW Coaxial Gyrotron at 170 GHz and Test Facility for ITER, Third IAEA Technical Meeting on ECRH Physics and Technology for ITER, Como, Italy, May 2-4, 2005; published in 2005 J. Phys.: Conf. Ser. 25, pp. 33-44.

Physics Education

S.Nedev , «The catenary - an ancient problem on the computer screen», Eur. J. Phys. 21, 5 (2000) 451.

Ц.Узунов, Е.Кашчиева , П.Кръстев, «Как да увеличим обема на физичните знания за инженерните специалности», ХХIХ-та Национална конференция по въпросите на обучението по физика, «Учевните програми по физика в средните и висшите училища» 10.05-12.05.2001, гр.Смолян, стр.64.

S.Nedev , «Speed of sound in closed pipe using a sound card», Physics Education 37, 6 (2002) 527.

E.Kашчиева , Вл.Иванова , «Взаимодействия на йонизиращите лъчения с веществото” – специализиран курс към френската специалност “Индустриална химия”, ХТМУ – София, ХХХ-та Национална конференция по въпросите на обучението по физика, ”Обучението по Физика и опазването на околната среда” 30.05-02.06.2002, гр.Пловдив, стр.146.

E.Kashchieva , G.Milkova, Sur un projet de pilotage de mathematique correspondant aux besoins de la physique, J. UCTM - Sofia, XXXVII, 5 (2002) 285.

E.Kashchieva , Vl.Ivanova , «Interaction entre les rayonnements ionisants et la matiere - quelques aspects pedagogiques et scientifiques», ibid. p. 291.

S.Nedev, V. Ivanova, "Web camera as a measuring tool in the undergraduate physics laboratory", European Journal of Physics, v. 27, p. 123, 2006.

С. Недев , XXXV национална конференция по въпросите на обучението по физика, Плевен, 1-4.IV.2007, "Използуване на компютър със стандартни периферни устройства във физичния експеримент", Сборник с доклади стр. 224

С. Недев, Вл. Иванова, И.Йовчев, С. Рангелов, "Измерване на ъгъла на мокрене с използване на компютър и WEB камера", УНИТЕХ-07, 23 - 24.XI.2006, Габрово, Proceedings v. II, p. 384.

I. Yovchev, N. Tonova, S. Nedev, E. Kashchieva, Possibilities for Extension of the Interdisciplinary Connections of Teaching in Physics in the University of Chemical Technology and Metallurgy - Sofia, Int. Scientific Conference UNITECH'06, Gabrovo, Bulgaria, November 24-25, 2006, p. III-251.22.

И. Йовчев, С. Недев, Н. Тонова, Е. Кашчиева, Примери за интердисциплинарни връзки на обучението по физика в ХТМУ - София, Международна научна конференция "УНИТЕХ'07", 23-24 ноември 2007, Габрово, с. II.381-383.23.

I. Yovchev, A. Zheliazkov, V. Stoianov, A Computer Program Solving Numerically the Kronig-Penney Model, представена на международна конференция по сл. 60 годишнината от основаването на кат. "Физикохимия", 23 ноември 2007, ХТМУ