1. ELSCHNIG, A. (1925). Amer. J. Ophthal., 8, 355.
2. Surgery of Cataract;KIRBY, D.B.,1950
3. Article on G. Pellier de Quengsy (1750-1835) in "The American Encyclopaedia and Dictionary of Ophthalmology";RIDDELL, W. Cited Kirby; StAsnD, T.H.,1950
4. A Treatise on Diseases of the Eye;Longmans, London. (Cited Kirby; WEEKS, J.E.,1950