Habib, S. M. A., A. N. M. Fakhruddin, S. Begum, and M. M. Ahmed. “Isolation and Screening of Thermo Stable Extracellular Alkaline Protease Producing Bacteria from Tannery Effluents”. Journal of Scientific Research, vol. 4, no. 2, Apr. 2012, p. 515, doi:10.3329/jsr.v4i2.6976.