00579naa#a2200181#i#450# EN\\bibl\1994 20240809061702.5 1992-5980 20140331b2014####ek#y0engy0150####ca RUS RU Fredholm property of composite two-dimensional integral operators with homogeneous singular-type kernels in Lp space Journal article rostov on don Don state technical University 2014 11 с. Journal article local Deundyak Vladimir Romanenko Elena naukaru.ru