Olopade, J. O., O. Igado, C. Nwafor, A. Alamu, and S. Onwuka. “Some Aspects of the Craniofacial Indices and Macro Neurometrics of the Nigerian Local Pig (<em>Sus scrofa</Em>)”. Italian Journal of Anatomy and Embryology, vol. 116, no. 1, July 2011, pp. 38-44, https://oajournals.fupress.net/index.php/ijae/article/view/1090.