00532naa#a2200205#i#450# EN\\bibl\74529 20241125185838.1 2413-046X 20180225b2018####ek#y0engy0150####ca ENG RU Journal article Moscow Electronic science 2018 0 с. Journal article local . 338.62 ENG Sergeeva Nina Dmitrievna Osnach Veronika Petrovna Pigareva Elizaveta Sergeevna e-integral.ru