00502naa#a2200193#i#450# EN\\bibl\74256 20250102162924.4 2413-046X 20170625b2017####ek#y0engy0150####ca ENG RU Journal article Moscow Electronic science 2017 0 с. Journal article local . 336.221:[338.45:622] ENG Kashirina Marina Valentinovna Sergeeva Svetlana Alekseevna qje.su