1. Mackenzie, W.: A Practical Treatise on the Diseases of the Eye. London, 1830, p. 580.
2. Ueber die Iridectomie bei Glaucoma und über den Glaucomatosen Process;von Graefe;Arch. f. Ophth.,1857
3. Recent Advances in Ophthalmology;Duke-Elder,1951
4. The significance of base pressure in primary glaucoma;Reese;Am. J. Ophth.,1948
5. Field changes after satisfactory filtration operations for glaucoma;Burke;Am. J. Ophth.,1940