FEDIRKO, Mykhailo; HUHUL, Oksana; BRYCH, Bohdan. Theoretical and applied aspects of developing the energy services market in Ukraine. Herald of Economics, [S. l.], n. 1(87), p. 7–19, 2019. DOI: 10.35774/10.35774/visnyk2018.01.007. Disponível em: https://visnykj.wunu.edu.ua/index.php/htneu/article/view/900.. Acesso em: 6 dec. 2025.