00553naa#a2200205#i#450# EN\\bibl\74823 20241124191831.7 2413-046X 20190125b2019####ek#y0engy0150####ca ENG RU Journal article Moscow Electronic science 2019 0 с. Journal article local . 339.54.012+338.001.36 ENG Fomin Aleksandr Anatol'evich Shapovalov Dmitriy Anatol'evich Lepehin Pavel Pavlovich e-integral.ru