Kassie, Girma T, Augustine Langyintuo, Olaf Erenstein, Debrah Maleni, Simon Gwara, and Tsedeke Abate. “Drought Risk and Maize Production in Southern Africa”. Journal of Asian Scientific Research 3, no. 10 (October 1, 2013): 956–973. Accessed November 23, 2024. https://archive.aessweb.com/index.php/5003/article/view/3548.