TY JOUR TI Theoretical Aspects of the Toolkit Analysis Effective Use of Energy in an Industrial Enterprise KW production function KW interchangeability of energy resources KW economic and mathematical estimates KW fuel and energy balance JO Scientific Research and Development. Economics AU Koksharov, V.A. AU Kirshina, I.A. PY 2020 IS 8 PB INFRA-M Academic Publishing LLC.