International Journal of Microbiology Research Volume-1 Issue-1
Vamsi Krishna K et al. (2009) Optimization of growth and production of protease by Penicillium species using submerged fermentation. International Journal of Microbiology Research. 1(1). p. 14-18. http://dx.doi.org/10.9735/0975-5276.1.1.14-18