By Zyubin S.A.   Levchuk V.M.   in Siberian Mathematical Journal

ISSN:0037-4466|44|4|581-586

Springer Publishing Company ‎(2003)‎

Access to resources Favorite 14.938908

By Zyubin S.   in Algebra and Logic

ISSN:0002-5232|45|5|296-305

Springer Publishing Company ‎(2006)‎

Access to resources Favorite 6.6519156