SALIMBAEVA, R.; ADAMBEKOVA, A.; Стамкулов S. Integrative justification of the effectiveness of environmental protection expenditures: the experience of single-industry towns in the Karaganda region. Economic series of the Bulletin of L.N. Gumilyov ENU, [S. l.], n. 4, p. 139–156, 2025. DOI: 10.32523/2789-4320-2025-4-139-156. Disponível em: https://bulecon.enu.kz/index.php/main/article/view/1291. Acesso em: 28 jan. 2026.