POL, Małgorzata; RUTKOWSKA, Małgorzata. The efficiency calculation and selection of the optimal energy carrier in the aspect of sustainable development. Economics and Environment, Poland, v. 91, n. 4, p. 961, 2025. DOI: 10.34659/eis.2024.91.4.961. Disponível em: https://ekonomiaisrodowisko.pl/journal/article/view/961.. Acesso em: 20 may. 2025.