00579naa#a2200181#i#450# EN\\bibl\3910 20241128043154.4 2308-8877 20141113b2014####ek#y0engy0150####ca RUS RU About fractional powers of a class of integral operators Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2014 3 с. Journal article local Kostin V. Gim M. naukaru.ru