ASSURANCE OF SUSTAINABILITY REPORTING FOR FUEL AND ENERGY COMPLEX ENTERPRISES Authors I. Melnychuk https://orcid.org/0009-0002-1521-2324 DOI: https://doi.org/10.32702/2307-2105.2026.4.180 Downloads pdf (Українська) Published 2026-04-23 Issue No. 4 (2026): Efektyvna ekonomika Section Статті