KOLEV, Rosen. STRUCTURAL ANALYSIS OF THE COSTS AND THEIR EFFICIENCY INMARITSA-IZTOK 2 TPP EAD FOR THE PERIOD 2013-2022. E-Journal VFU, [S. l.], n. 22, p. 154–171, 2024. DOI: 10.53606/evfu.22.154-171. Disponível em: https://ejournal.vfu.bg/index.php/vfu/article/view/19. Acesso em: 23 feb. 2026.