By Dimitrov D.   Tzocheva D.   Kovacheva D.   in Thin Solid Films

ISSN:0040-6090|323|1|79-84

Elsevier‎(1998)‎

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By Dimitrov D.   Starbova K.   Tzocheva D.   Kovacheva D.   in Vacuum

ISSN:0042-207X|58|2|358-363

Elsevier‎(2000)‎

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