1. Brit;BEDFORD, M.A.; BEDOTTO, c; MACFAUL, P.A.;J. Ophthal,1971
2. Surv;BONIUK, M.; BISHOP, D.;Ophthal,1969
3. Amer;CLEASBY, G.W.; FUNG, W.E.; SHEKTER, W.B.;J. Ophthal,1967
4. Arch;DEJEAN, C.;Ophtal,1934
5. Arch;FOOS, R.Y.; STRAATSMA, B.R.; ALLEN, R.A.;Ophthal. (Chicago); Ophthalmic Pathology,1965