“ The Novelty of Amino Acid Production From Feathers Degradation Em-Ploying Keratinase from Streptomyces Venezuelae AZ15”.
Iraqi Journal of Science 64, no. 8 (August 30, 2023): 3925–3934. Accessed August 2, 2025.
https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/8563.