1. Bernal, J. D...Trans. Faraday Soc., 1940,36, 886. Quoted from Haurowitz.
2. Haurowitz, F...Chemistry and Biology of Proteins, Academic Press, New York, 1950, p. 125.
3. Singh, S. I. and Singh, I...Curr. Sci., 1954a,23, 126.
4. ----- ..Ibid., 1955b.
5. —————..Proc. Ind. Acad. Sci., 1954b,60, 125.