%0 Journal Article %T Impact of energy efficiency on activities of enterprise %A Azieva, R.. %A Taymaskhanov, Z.. %K oil and gas industry, fuel and energy resources, energy efficiency, energy saving, Gazprom, PJSC %J Vestnik of Astrakhan State Technical University. Series: Economics %D 2023 %N %P 7 %I Astrakhan State Technical University