Vijayalakshmi, S., J. . Ranjitha, and V. D. Rajeswari. “ENZYME PRODUCTION ABILITY BY BACILLUS SUBTILIS AND BACILLUS LICHENIFORMIS - A COMPARATIVE STUDY”. Asian Journal of Pharmaceutical and Clinical Research, vol. 6, no. 4, Oct. 2013, pp. 29-32, https://journals.innovareacademics.in/index.php/ajpcr/article/view/479.