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ISSN:1072-3374|197|6|755-760

Springer Publishing Company ‎(2014)‎

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By Diasamidze Ya.   Makharadze Sh.   Partenadze G.   Givradze O.   in Journal of Mathematical Sciences

ISSN:1072-3374|141|2|1134-1181

Springer Publishing Company ‎(2007)‎

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