Gebru, Hintsa, Abraha Hailemariam, and Tesfay Belay. 2011. “Genotype by Environment Interaction and Grain Yield Stability of Early Maturing Bread Wheat (Triticum Aestivum L.) Genotypes in the Drought Prone Areas of Tigray Region, Northern Ethiopia”. Ethiopian Journal of Applied Science and Technology 2 (1), 51-57. https://journals.ju.edu.et/index.php/ejast/article/view/822.