%0 Journal Article %T COMPARATIVE CHARACTERISTICS OF RUSSIAN REFINERIES %A Litvincev, Y.I. %A Litvintseva, Z.O. %K oil refinery, oil refining depth, Nelson index %J Bulletin of the Angarsk State Technical University %D 2023 %N 1 %P 3 %I Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»