Singh S, Yadav CL, Banerjee DP. Resistance of non-lactating ewes and lambs of indigenous and crossbreds to natural infection with Haemonchus contortus. Indian J of Anim Sci. 2012;68(1). Accessed October 24, 2025. https://epubs.icar.org.in/index.php/IJAnS/article/view/19255