00521naa#a2200169#i#450# EN\\bibl\1993 20250206203748.4 1992-5980 20140331b2014####ek#y0engy0150####ca RUS RU On presentation of linear operators commuting with differentiation in simply-connected domain Journal article rostov on don Don state technical University 2014 6 с. Journal article local Bratishchev Aleksandr zh-szf.ru