1. T. Kobayashi, “Starch Handbook,” ed. by Z. Nikuni and S. Suzuki, Asakura Shoten, Ltd., Tokyo, 1961, p. 198.
2. K. Souda, “Seikagaku Zikkenkôza, Vol. V., Kousokenkyuhou,” ed. by Yamakawaet al, Tokyo Kagaku Dôzin, Tokyo, 1978, p. 250.
3. E. Y. C. Lee and W. J. Whelan, “The Enzymes,” Vol. V, ed. by Boyer, Academic Press, 1971, p. 192.