Menang Etiene Fomonyuy, et al. “Nexus Between Environmental Degradation and Agricultural Productivity in Sub Sahara Africa; Does Poverty Matters?”. Global Journal of Management and Business Research, vol. 23, no. B2, Apr. 2023, pp. 1-10, https://journalofbusiness.org/index.php/GJMBR/article/view/102788.