1. S. Bayne, “Methods in Carbohydrate Chemistry,” Vol. 2, ed. by R. L. Whistler and M. L. Wolfrom, Academic Press Inc., New York and London, 1962, p. 421.
2. L. M. Jackman and S. Sernhell, “Applications of Nuclear Magnetic Resonance in Organic Chemistry,” Pergamon Press, New York, N.Y., 1969, p. 134.
3. T. Kurata, Dissertation, Department of Agricultural Chemistry, The University of Tokyo, 1966.