R. Philip, N. Kannan, T. R Srinivasan, S. Das, V. Balakrishnan. 2009. “Isolation and Characterization of Thermostable Protease Producing Bacteria from Tannery Industry Effluent”. Recent Research in Science and Technology 1 (2). https://updatepublishing.com/journal/index.php/rrst/article/view/279.