1. Rac, M., in “Proceedings of 5th International Sunflower Conference,” Clermont-Ferrand, France, July, 1972, Centre Technique Interprofessionnel des Oleagineux Metropolitains, Paris, France, p. 365.
2. Ostric-Matijasevic, B., and J. Turkulov, Rev. Fr. Corps Gras 20:5 (1973).
3. Guillaumin, R., and N. Drouhin, Ibid. 12:665 (1965).
4. Skau, E.L., W.N. Dopp, E.G. Burleigh, and L.F. Banowetz, JAOCS 27:556 (1950).
5. Boucher, R.E., and E.L. Skau, Ibid. 32:497 (1955).