Habibian, Mahmood, and Ghorbanali Sadeghi. “Effects of Enzyme Supplementation on Replacing Maize With Barley in Diet of Broiler Chicks”. Journal of BioScience and Biotechnology, vol. 5, no. 2, Sept. 2016, pp. 159-65, https://editorial.uni-plovdiv.bg/index.php/JBB/article/view/23.