00472naa#a2200193#i#450# EN\\bibl\74668 20241122194734.5 2413-046X 20181025b2018####ek#y0engy0150####ca ENG RU Journal article Moscow Electronic science 2018 0 с. Journal article local . 332.2:528.85 ENG Doncov A. V. Luk'yanova T. S. e-integral.ru