By Kovacheva D.   Stambolova I.   Konstantinov K.   Donchev T.   in Thin Solid Films

ISSN:0040-6090|280|1|112-114

Elsevier‎(1996)‎

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By Stambolova I.   Konstantinov K.   Kovacheva D.   Peshev P.   Donchev T.   in Journal of Solid State Chemistry

ISSN:0022-4596|128|2|305-309

Academic Press‎(1997)‎

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By Stambolova I.   Kovacheva D.   Konstantinov K.   Donchev T.   in Vacuum

ISSN:0042-207X|47|10|1239-1242

Elsevier‎(1996)‎

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