GONCHAR O, MOROZ S. MARKET CONCENTRATION AND PRICE DISCRIMINATION IN THE ENERGY SECTOR OF UKRAINE. Herald of Khmelnytskyi National University. Economic sciences [Internet]. 2026 May 28 [cited 2026 Nov. 13];354(3):437-44. Available from: https://heraldes.khmnu.edu.ua/index.php/heraldes/article/view/2862