1. Brit. J3;BIETTI, G.B.; GUERRA, P.; GASPARE, F.E.R.R.A.R.I.S.D.E.; F, P.;Bull. Soc. franc. Ophtal,1955
2. Amer;BROWNSTEIN, S.; RODRIGUES, M.M.; FINE, B.S.; ALBERT, E.N.;J. Ophthal,1973
3. Arch;CHRISTENSEN, G.R.;Ophthal. (Chic.),1973
4. COGAN, D. G., KUWABARA, T., and HOWARD, J. (1959) Ibid., 6i, 388 FREEDMAN, A. (1965) Ibid., 74, I98 (1973a) Ibid., 89, I93
5. Amer;FRAUNFELDER, F.T.; HANNA, C.;Y. Ophthal,1973