Wamaitha, M. N., 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”. Journal of Advanced Veterinary and Animal Research, vol. 2, no. 3, Sept. 2015, pp. 369-72, https://banglajol.info/index.php/JAVAR/article/view/24891.