M. A. A. Mamun, M. M. Khan, M. N. R. Akand, S. N. Khan, and M. M. Hoq, “Characterization of an alkaline protease with high quality bating potential in leather processing from Bacillus licheniformis MZK05M9 mutant”, IJBR, vol. 3, no. 1, pp. 36–41, Mar. 2015, doi: 10.14419/ijbr.v3i1.4250.