00500naa#a2200193#i#450# EN\\bibl\74880 20250115031126.3 2413-046X 20190325b2019####ek#y0engy0150####ca ENG RU Journal article Moscow Electronic science 2019 0 с. Journal article local . 332.33(571.53) ENG Tulunova Evgeniya Stepanovna Chernigova Dina Rashitovna e-integral.ru