FORMATION OF ADAPTIVE BUSINESS MODELS OF UKRAINIAN OIL AND GAS COMPANIES IN THE CONTEXT OF A SUSTAINABLE DEVELOPMENT STRATEGY Authors D. Nikolaiev https://orcid.org/0000-0002-7563-5962 DOI: https://doi.org/10.32702/2307-2105.2026.2.155 Downloads pdf (Українська) Published 2026-02-19 Issue No. 2 (2026): Efektyvna ekonomika Section Статті