M. N. Wamaitha, D. O. Kihurani, P. Kimeli, W. E. Mwangi, and J. D. Mande, “Surgical management of agenesis of the vulva with atresia ani-et-distal recti in a heifer calf: A case report”, J. Adv. Vet. Anim. Res, vol. 2, no. 3, pp. 369–372, Sep. 2015.