1. Arch;ARMALY, M.F.;Ophthal. (Chicago),1969
2. Brit;BUCHANAN, W.M.; GLOSTER, j;J. Ophthal; In "Glaucoma,1965
3. LINNER, E., and STROMBERG, U. (1967) Idem, p. I87
4. Atti Soc;PERKINS, E.S.;oftal. ital,1967
5. In "Glaucoma". Tutzing Symposium;WALKER, W.M.,1967