1. BARRAQUER, J. (1959) Trans. ophthal. Soc. U.K., 79, 58I
2. 90, 73I (in discussion of Dallas) BINKHORST;Ibid,1962
3. Ophthalmologica (Basel), x48, I69 - (97;Ophthal,1964
4. CHOYCE, P. (1959) Trans. ophthal. Soc. U.K., 79, 582
5. System of Ophthalmology;DALLAS, N.L.;Ibid,1970