1. Venomous Animals and their Venoms;Bucherl, W.; Buckley, E.,1971
2. Duke-Elder, S. (1940). In System of Ophthalmology, ed. W. S. Duke-Elder, Vol. 14, pp. 551, 1204. Henry Kimpton: London.
3. Goldstein, S., and Rucker, G. (1964). Journal of the American Medical Association, 50, 188.
4. Goldstein, S., and Woltman, J. (1960). Journal of the American Medical Association, 46, 173.
5. Toxicology of the Eye;Grant, A.,1962