1. Saussure, T., de Frorieps Notizen,24, 29 (1842).
2. Mary, W., Crombie, L., and Comber, R., J. Exptl. Botany,7, 166–180 (1956).
3. Kartha, A. R. S., and Shethi, A. S., J. Sci. Industr. Res.,17B, 34 (1958);Ibid., 17C, 104 (1958).
4. Official and Teniative Methods of the American Oil Chemists' Society, Cd 1-25, Cd 3-25, Ca 6a-40, Ca 5a-40, 2nd ed., including additions and revisions, 1947–1951, Am. Oil Chem. Soc., Chicago, Ill.
5. Hilditch, T. P., “The Chemical Constitution of Natural Fats,” 3rd ed., Chapman and Hall Ltd., London, 1956, p. 571.