00547naa#a2200205#i#450# EN\\bibl\74286 20241129114131.5 2413-046X 20170625b2017####ek#y0engy0150####ca ENG RU Journal article Moscow Electronic science 2017 0 с. Journal article local . 330.3:334:338.4 ENG Ryabcev Aleksey Yur'evich Kochergina Tat'yana Viktorovna Yushkevich Elena Evgen'evna e-integral.ru