3Hamiton. R. M and Paschall. E. E, production and use of starch in Starch Chemistry and techndogy[ M]. vol. 2 Whistler. R. L and Paschaff. E. E. Eds . Academic Press New Yoke. Chap. 14, 1967.
4Radley. J. A. Starch Production Technology. applied science publisher 1976, chap22.