By Perestyuk N.A.   Chernikova O.S.   in Ukrainian Mathematical Journal

ISSN:0041-5995|53|1|91-98

Springer Publishing Company ‎(2001)‎

Access to resources Favorite 17.824417

By Perestyuk M.O.   Chernikova O.S.   in Ukrainian Mathematical Journal

ISSN:0041-5995|54|2|306-315

Springer Publishing Company ‎(2002)‎

Access to resources Favorite 15.148527