GULIEV, I.; KHUBAEVA, A.; MARKELOVA, E.; MATVEEV, A.; KLESHCHEV, V. Bulgarian Green Energy: A Contradictive Choice of Future and Finance. Journal of Mines, Metals and Fuels, [S. l.], v. 70, n. 11, p. 602–609, 2023. DOI: 10.18311/jmmf/2022/31378. Disponível em: https://informaticsjournals.com/index.php/jmmf/article/view/31378. Acesso em: 8 may. 2024.