1. BERGMAN, G. D. (1964). Amer. J. Ophthal., 58, 125.
2. CmII, H. H., TENG, C. C., and KATZIN, H. M. (1958). Ibid., 45, 518.
3. , (1962). Ibid., 53, 215.
4. System of Ophthalmology;DUKE-ELDER, S.; LEIGH, A.G.,1965
5. In "The Structure of the Eye";FEENEY, M.L.; GARRON, L.K.,1961