MADANRAO MANE, et al. “PURIFICATION, CHARACTERIZATION AND APPLICATIONS OF THERMOSTABLE ALKALINE PROTEASE FROM MARINE STREPTOMYCES SP. D1”. International Journal of Pharma and Bio Sciences, vol. 4, no. 1, Mar. 2013, pp. 572-8, https://ijpbs.net/index.php/journal/article/view/1942.