A. S. Abou-Elhamd, Y. AbdelRahman, and A. Selim, “Pelvic Urethra and its Associated Glands in Donkey (Equus asinus): Histological and Histochemical Findings with Special Reference to their Seasonal Variations”, JAVR, vol. 9, no. 4, pp. 134-143, Oct. 2019.