USHCHAPOVSKYI, Yurii. INSTITUTIONAL ASPECTS OF M. KALETSKY’S “DEGREE OF MONOPOLY” IN MARKET STRUCTURES OF IMPERFECT COMPETITION. Social Development: Economic and Legal Issues, [S. l.], n. 7-8, 2025. DOI: 10.70651/3083-6018/2025.7-8.06. Disponível em: https://www.eu-scientists.com/index.php/sdel/article/view/304. Acesso em: 13 aug. 2026.