1.
BOIKO O, KUNZ A, KLEMPA M, BUJOK P. Comparative Analysis of the Natural Gas Sector in Ukraine and the Czech Republic, Threats and Development Prospects. GSE [Internet]. 16Jun.2021 [cited 20Sep.2021];67(2):41–46. Available from: http://gse.vsb.cz/ojs/index.php/GSE/article/view/339