By Buhrii O.   Hlynyans’ka Kh.   in Journal of Mathematical Sciences

ISSN:1072-3374|174|2|169-189

Springer Publishing Company ‎(2011)‎

Access to resources Favorite 12.497998

By Buhrii O.M.   in Ukrainian Mathematical Journal

ISSN:0041-5995|53|7|1027-1042

Springer Publishing Company ‎(2001)‎

Access to resources Favorite 3.7557118