KONASZCZUK, Wojciech. Cross-Border Cooperation between Poland, Russia and Ukraine on Oil and Gas Trade — an Attempt at Reflection in the Context of Energy Security. Regional Barometer. Analyses & Prognoses, [S. l.], v. 16, n. 5(S), p. 43–49, 2019. DOI: 10.56583/br.61. Disponível em: https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/61. Acesso em: 16 apr. 2025.