00631naa#a2200193#i#450# EN\\bibl\1994 /en/manage/index 20250130180344.4 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 fht.editorum.ru /en/manage/index