F. S. Costa, R. T. de S. Rodrigues, C. W. de S. Wanderley, J. Pereira Neto, and M. D. de Faria, “Biometry of head and cranial cavity of wooless mongrel sheep (Ovis aries LINNAEUS, 1758) in Petrolina/Pernambuco, Brazil”, Braz. J. Vet. Res. Anim. Sci., vol. 48, no. 4, pp. 307–314, Aug. 2011, doi: 10.11606/S1413-95962011000400005.