1. Textbook of ophthalmology;Fuchs,1924
2. Parsons, J. H. The pathology of the eye. London, G. P. Putnam's Sons, v. 1, p. 106.
3. Textbook of ophthalmology;Roemer-Foster,1912
4. Atlas of the histopathology of the eye;Fuchs;Leipzig, Deuticke,1927
5. Augenärztliche Eingriffe;Meller,1921