BalaKumaran, M., and R. Santhi. “Keratinolytic Protease Production by Bacillus Cereus Strain Ps03 under Submerged Fermentation: Optimization and Characterization”. International Journal of Applied Sciences and Biotechnology, vol. 4, no. 3, Sept. 2016, pp. 397-01, doi:10.3126/ijasbt.v4i3.15780.