KWIATKIEWICZ, Piotr. Non-Market Price Determinants of Fossil Energy Raw Materials. Regional Barometer. Analyses & Prognoses, [S. l.], v. 20, n. 1, p. 17–23, 2024. DOI: 10.56583/br.2388. Disponível em: https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/2388. Acesso em: 18 jun. 2025.