1. Kordan, H. A., Ph.D. Dissertation, Univ. California, Los Angeles (1961).
2. Kordan, H. A., Bull. Torrey Bot. Club, 89, 49 (1962).
3. Bartholomew, E. T., and Reed, H. S., in The Citrus Industry, edit. by Webber, H. J., and Batchelor. L. D., 1, 689 (Univ. California Press, Berkeley and Los Angeles, 1948).
4. Bartholomew, E. T., and Sinclair, W. B., The Lemon Fruit, 7 (Univ. California Press, Berkeley and Los Angeles, 1951).
5. Kordan, H. A., and Morgenstern, L., Exp. Cell Res., 30, 98 (1963).