1. E. A. Rabat, “Blood Group Substances,” Academic Press Inc., New York, 1956.
2. G. F. Springer. “Ciba Foundation Symposium on the Chemistry and Biology of Mucopolysaccharides.” J. and A. Churchill Ltd., London, 1958, p.216.
3. N. Hiyama and S. Sasaki, “Eato-Seikagaku,” Vol I, ed. by F. Egamiet al., Ryoritsu Shuppan, Tokyo, 1970, p.475.
4. G. Hartmann, “Group Antigens in Human Organs,” Munksgaard Copenhagen, 1941.
5. T. Furuhata, “Retsuekigata-Gaku,” Igaku Shoin, Tokyo, 1957, p. 169.