1. Awe, W., Skroch, B., and Demelius, G., Süddeut. Apoth. Ztg.88, 155–8 (1948).
2. Dam, M., Biochem. Zeit.152, 101–110 (1924).
3. Earle, F. R., and Milner, R. T., Oil and Soap16, 69–71 (1939).
4. Govindarajan, V. S., J. Indian Chem. Soc. News Ed.3, 193–7 (1943).
5. Hanus, J., Z. Untersuch. Nahr. u. Genuss.4, 913–20 (1901).