S. Markos, B. Belay, and T. Dessie, “Qualitative Traits Characterization of Three Local Chicken Ecotypes of Western Zone of Tigray, Northern Ethiopia”, Int. J. Poult. Sci., vol. 19, no. 3, pp. 111–123, Feb. 2020, doi: 10.3923/ijps.2020.111.123.