00547naa#a2200205#i#450# EN\\bibl\74667 20241221033228.6 2413-046X 20181025b2018####ek#y0engy0150####ca ENG RU Journal article Moscow Electronic science 2018 0 с. Journal article local . 528.4,339.186 ENG Saprin Sergey Viktorovich Vershinin Valentin Valentinovich Doncov Aleksandr Vladimirovich ecience.ru