Waheed M., Ghoneim I., and Hassieb M. “Development And Validation Of Testicular Biopsy For Diagnosis Of Infertility In Camels (Camelus Dromedarius)”. Clinical Theriogenology, vol. 3, no. 2, June 2011, pp. 105-14, https://clinicaltheriogenology.net/index.php/CT/article/view/10136.