Tesfay Gebrekirstos Gebremariam, Getaneh Woldeab and Thangavel Selvaraj 2016. Distribution, physiologic races and reaction of wheat cultivars to virulent races of leaf rust ( Puccinia triticina Eriks and Henn.) in south e astern zone of Tigray, Ethiopia. International Journal of Life Sciences. 4, 1 (Apr. 2016), 1–21.