00583naa#a2200217#i#450# EN\\bibl\74910 20241123155130.6 2413-046X 20190325b2019####ek#y0engy0150####ca ENG RU Journal article Moscow Electronic science 2019 0 с. Journal article local . 332.631 ENG Shapovalov Dmitriy Anatol'evich Lebedev Petr Petrovich Savinova Svetlana Viktorovna Abdueva Madina Aslanhanovna e-integral.ru