Kwiatkiewicz, Piotr. “Non-Market Price Determinants of Fossil Energy Raw Materials”. Regional Barometer. Analyses & Prognoses 20, no. 1 (June 26, 2024): 17–23. Accessed November 22, 2024. https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/2388.