Aktaeva, S., and M. Saparbayev. “Study of Proteolytic and Keratinolytic Enzymes of Bacillus Sp. A5.3”. Eurasian Journal of Applied Biotechnology, no. 2 (June 24, 2021). Accessed May 18, 2024. https://www.biotechlink.org/index.php/journal/article/view/36.