1. Melnick, D., F.H. Luckmann, and C.M. Gooding, JAOCS 35:271 (1958).
2. Ota, S., A. Mukai, and I. Yamamoto, Yukagaku 12:409 (1963).
3. Ita, S., A. Mukai, and I. Yamamoto, Ibid. 13:264 (1964).
4. Ota, S., N. Iwata, and M. Morita, Ibid. 13:210 (1964).
5. Ota, S., Ibid. 13:269 (1964).