Salimbaeva, R., A. Adambekova, and Стамкулов S. 2025. “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, no. 4 (December):139-56. https://doi.org/10.32523/2789-4320-2025-4-139-156.