Devi, Ashika, et al. “Challenzyme Supplementation of High Expeller Copra Meal in Corn-Animal Protein Diets for Broilers: Growth Performance, Nutrient Digestibility and Carcass Traits”. Indian Journal of Animal Nutrition, vol. 36, no. 2, Aug. 2019, https://epubs.icar.org.in/index.php/IJAN/article/view/90172.