Gurmu, Fekadu. “Stability Analysis of Fresh Root Yield of Sweetpotato in Southern Ethiopia Using GGE Bi-Plot”. International Journal of Pure Agricultural Advances 1, no. 1 (April 4, 2017): 1–9. Accessed November 29, 2022. https://onlinesciencepublishing.com/index.php/ijpaa/article/view/477.