TY JOUR TI FEASIBILITY STUDY OF THE CONSTRUCTION OF AN OIL REFINERY IN THE REPUBLIC OF SAKHA (YAKUTIA) KW oil refining KW tar visbreaking KW vacuum gasoil hydrocracking KW payback KW profitability. JO Modern Technologies and Scientific and Technological Progress AU Gordeev, K.I. AU Podoplelov, E.V. AU Dement'ev, A.I. PY 2020 IS 2018 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»