S. Kumar Soni and Khire, J. Malhar, ?Production and partial characterization of two types of phytase from aspergillus niger NCIM 563 under submerged fermentation conditions?, World Journal of Microbiology & Biotechnology, vol. 23, no. 11, pp. 1585-1593, 2007.

K. P.  Bhavsar, Shah, P., Soni, S. Kumar, and Khire, J. Malhar, ?Influence of pretreatment of agriculture residues on phytase production by aspergillus niger NCIM 563 under submerged fermentation conditions?, African Journal of Biotechnology, vol. 7, no. 8, pp. 1101-1106, 2008.

P.  Shah, Bhavsar, K. P., Soni, S. K., and Khire, J. Malhar, ?Strain improvement and up scaling of phytase production by aspergillus niger NCIM 563 under submerged fermentation conditions?, Journal of Industrial Microbiology & Biotechnology, vol. 36, no. 3, pp. 373-380, 2009.