00631naa#a2200193#i#450# EN\INFRA-M\bibl\18772 20241229124459.7 2500-0527 20171102b2017####ek#y0engy0150####ca RUS RU On the efficiency of functioning of domestic corporations of the oil and gas sphere Journal article Moscow INFRA-M Academic Publishing LLC. 2017 11 с. Journal article local Экономика. Экономические науки. 33 RUS Tebekin A. V. Bozrov Alan Ruslanovich naukaru.ru