Vallejo-Rosero, Christian Alirio, et al. “Economic Eco-Efficiency Versus Social Eco-Efficiency: A Comparative Analysis of Their Theoretical Foundations and Methodological Structures”. Journal of Economic and Social Science Research, vol. 6, no. 2, Apr. 2026, pp. 1-14, https://doi.org/10.55813/gaea/jessr/v6/n2/236.