Selection of design alternatives in the formation of energy-saving programs at the enterprises of the mining and metallurgical complex of UkraineIvan Trifonov, Petrо Sankov, Kostiantyn Dikariev and Olha KapshukE3S Web Conf., 123 (2019) 01027DOI: https://doi.org/10.1051/e3sconf/201912301027