ACHANDI, E. L., A. KIDANE, and A. HEPELWA. “Technical Efficiency: A Study of Smallholder Rice Farmers in Kilombero District, Tanzania”. Journal of Economics Bibliography, vol. 5, no. 3, Oct. 2018, pp. 193-08, https://journals.econsciences.com/index.php/JEB/article/view/1740.