By Petkov K.   Kozhuharova D.   Cernoskova E.   in Physics and Chemistry of Glasses - European Journal of Glass Science and Technology Part B

ISSN:0031-9090|46|2|204-207

Society of Glass Technology‎(2005)‎

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By Wagner T.   Kasap S.O.   Petkov K.   in Journal of Materials Science

ISSN:0022-2461|32|22|5889-5893

Springer Publishing Company ‎(1997)‎

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By Petkov K.   Iliev T.   Todorov R.   Tzvetkov D.   in Vacuum

ISSN:0042-207X|58|2|321-326

Elsevier‎(2000)‎

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By Danev G.   Spassova E.   Petkov K.   Assa J.   Wolf-Rottke B.   Ihleman J.   in Vacuum

ISSN:0042-207X|48|1|63-67

Elsevier‎(1997)‎

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By Petkov K.   Todorov R.   Kozhuharova D.   Tichy L.   Cernoskova E.   Ewen P. J. S.   in Journal of Materials Science

ISSN:0022-2461|39|3|961-968

Springer Publishing Company ‎(2004)‎

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