00476naa#a2200193#i#450# EN\\bibl\74649 20241122234135.5 2413-046X 20180825b2018####ek#y0engy0150####ca ENG RU Journal article Moscow Electronic science 2018 0 с. Journal article local . 334.734.01 ENG Spirchagov G. S. Nuretdinova Yu. V. e-integral.ru