Haileselassie, B., Y. Weldegebreil, and S. Kidanu. “Status of Tissue Zinc and Iron Contents of Teff [(Eragrostis Tef (Zucc.) Trotter] and Bread Wheat (Tritcum Aestivum) and Their Relationships With Some Soil Parameters in Tigray Region, Northern Ethiopia”. Ethiopian Journal of Applied Science and Technology, Vol. 9, no. 2, Sept. 2018, pp. 12-21, https://ejhs.ju.edu.et/index.php/ejast/article/view/709.