1. Arch;ARMALY, M.F.;Ophthal. (Chicago); Brit,1963
2. CHESTER, E. M., and BANKER, B. Q. (1967) Arch. intern. Med., I20, 397
3. CHURCH, R. E. (1964) Proc. roy. Soc. Med., 57, 45 CULLEN, J. F. (1967) Lancet, 2, 892 and CONACHER, W. D. H. (1965) Brit. J. Ophthal., 4s, I I
4. DUNCAN, L. J. P., NOLAN, J., IRELAND, J. T., CULLEN, J. F., CLARKE, B. F., and OLIVER, M. F. (1968) Diabetes, 17, 458
5. System of Ophthalmology;DUKE-ELDER, S.; DOBREE, J.H.,1967