TY JOUR TI Improving the Methodology for Assessing the Effectiveness of Economic Entities in Modern Conditions KW synergistic efficiency KW methodology for determining efficiency KW efficiency indicators KW levels of efficiency KW externalities KW X-efficiency KW systemic efficiency JO Bulletin of Kemerovo State University. Series: Political, Sociological and Economic sciences AU Orehova, E.A. AU Korovnikova, I.V. AU Korovnikova, G.V. PY 2021 IS 6 PB Kemerovo State University