Bokhout, B., Nabuurs, M. and de, J. (2005) “Vasectomy of older bulls to manage elephant overpopulation in Africa: a proposal”, Pachyderm, 39(1), pp. 97–103. Available at: https://pachydermjournal.org/index.php/pachyderm/article/view/1245 (Accessed: 22 July 2024).