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ISSN:0042-207X|58|2|351-357

Elsevier‎(2000)‎

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By Vitanov P.   Kamenova M.   Tyutyundzhiev N.   Delibasheva M.   Goranova E.   Peneva M.   in Thin Solid Films

ISSN:0040-6090|297|1|299-303

Elsevier‎(1997)‎

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