A. E.-Z. Zayed, K. H. Aly, I. A.-A. Ibrahim, and F. M. Abd El-maksoud, “Morphological studies on the seasonal changes in the epididymal duct of the one-humped camel (camelus dromedarius)”, Vet Sci Develop, vol. 2, no. 1, p. e3, Feb. 2012.