YAVCHUNOVSKAYA, Regina. Informal cooperation as a perspective multipolarity and regional development. Public Administration and Civil Service, Астана, Казахстан, n. 2 (81), p. 121–127, 2022. DOI: 10.52123/1994-2370-2022-744. Disponível em: https://journal.apa.kz/index.php/path/article/view/744. Acesso em: 5 feb. 2026.