Dhyana, V. Reddy, et al. “Histomorphology and Histochemistry of Ductus Deferens in Adult Boar (Susscrofa Domestica)”. Indian Journal of Veterinary Anatomy, vol. 29, no. 2, Sept. 2018, https://epubs.icar.org.in/index.php/IJVA/article/view/83196.