By Skrypnik I.I.   in Ukrainian Mathematical Journal

ISSN:0041-5995|52|11|1768-1786

Springer Publishing Company ‎(2000)‎

Access to resources Favorite 21.041

By Liskevich Vitali   Skrypnik I.I.   Skrypnik I.V.   in manuscripta mathematica

ISSN:0025-2611|115|4|521-538

Springer Publishing Company ‎(2004)‎

Access to resources Favorite 13.150624