M. Hafezi Birgani and R. Ghaderi Moghaddam, “Evaluation of Environmental Sustainability Index (ESI) in the Countries around the Caspian Sea”, Rev. Publicando, vol. 5, no. 15(2), pp. 788–816, Jun. 2018, Accessed: Oct. 25, 2026. [Online]. Available: https://www.revistapublicando.org/revista/index.php/crv/article/view/1399