Yakymenko, I. ., N. . Bublienko, O. . Salavor, O. . Nychyk, Y. . Shapovalov, and D. . Henshel. “Energy Security of the European Union and Ukraine Since the 2022 Russia’s Invasion of Ukraine”. Strategic Planning for Energy and the Environment, vol. 45, no. 01, Feb. 2026, pp. 25–46, doi:10.13052/spee1048-5236.4512.