1. Bethge, P., and B. Lindgren, Sv. Papperstidn. 65:640 (1962).
2. Assarsson, A., I. Croon and A. Donetzhuber, Ibid. 66:940 (1963).
3. Assarsson, A., and G. Akerlund, Ibid. 69:517 (1966).
4. Croon, I., and C.B. Olsson, Ibid. 67:850 (1964).
5. Markley, K.S., “Fatty Acids: Their Chemistry, Production and Uses,” Part 2, Second Edition, Interscience Publishers, New York, 1961, p. 1168.