Kiyko, Sergey. “ADAPTIVE PORTFOLIO MANAGEMENT OF ENERGY SAVING PROJECTS AT A METALLURGICAL ENTERPRISE”. INNOVATIVE TECHNOLOGIES AND SCIENTIFIC SOLUTIONS FOR INDUSTRIES, no. 4 (14) (December 21, 2020): 56–70. Accessed May 13, 2024. https://journals.uran.ua/itssi/article/view/ITSSI.2020.14.056.