1. Arima, K. (1964). Microbial enzyme production. In:Global Impacts of Applied Microbiology. M. P. Starr ed. pp. 279?294, New York: John Wiley and Sons.
2. Beckord, L.D., Kneen, E. and Lewis, K.H. (1945).Ind. Eng. Chem. 37, 692?696.
3. Bernfeld, P. (1955). Amylases, ? and ?. In:Methods in Enzymology, S. P. Colowick and N. O. Kaplan eds. Vol. 1, pp 149?154, New York: Academic Press.
4. Chandra, A.K., Medda, S. and Bhadra, A.K. (1980).J. Ferment. Technol. 58, 1?10.
5. Datar, R. (1986).Process Biochem. 21(1), 19?26.