KRYVOKULSKA, Nataliia. COMMERCIAL ACTIVITY IN THE SYSTEM OF A MULTILEVEL SUSTAINABLE DEVELOPMENT ECONOMY. Regional aspects of productive forces development of Ukraine, [S. l.], v. 1, n. 31, p. 4–19, 2026. DOI: 10.35774/rarrpsu2026.31.004. Disponível em: https://rarrpsu.wunu.edu.ua/index.php/rapfdu/article/view/608. Acesso em: 15 jul. 2026.