Malik, Shabir Ahmad, et al. “Histomorphological, Micrometrical and Histochemical Characteristics of Abomasum in Gaddi Sheep (Ovis Aries) ”. Indian Journal of Veterinary Sciences and Biotechnology, vol. 13, no. 4, Apr. 2018, pp. 20-25, https://acspublisher.com/journals/index.php/ijvsbt/article/view/2674.