00623naa#a2200193#i#450# EN\INFRA-M\bibl\28877 20240428165706.7 2500-0527 20190531b2019####ek#y0engy0150####ca RUS RU Problems in the sphere of the Russian gas export during the sanctions period Journal article Moscow INFRA-M Academic Publishing LLC. 2019 4 с. Journal article local Экономика. Экономические науки. 33 RUS Gladkov Igor' Sergeevich Egorov K. I. naukaru.ru