By Boyvalenkov P.   Boumova S.   Danev D.   in European Journal of Combinatorics

ISSN:0195-6698|20|3|213-225

Elsevier‎(1999)‎

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By Boumova S.   Boyvalenkov P.   Stoyanova M.   in Problems of Information Transmission

ISSN:0032-9460|45|2|110-123

MAIK Nauka/Interperiodica‎(2009)‎

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