Gagan Mittal. “Effect of Nicotine on Ejaculated Cattle Bull Spermatozoa Acrosome Reaction and Motility—An in Vitro Study”. Revista Electronica de Veterinaria (December 29, 2017): 5-9. Accessed October 21, 2025. https://www.veterinaria.org/index.php/REDVET/article/view/2054.