1. The Glaucomas;Sugar,1951
2. Pigmentary glaucoma: A rare clinical entity, Am;Sugar;J. Ophth.,1949
3. Congenital pigmentation of the cornea (Krukenberg type);Goar;Tr. Am. Ophth., Soc.,1928
4. Krukenberg's spindle: A study of 202 collected cases;Evans;Arch. Ophth,1941
5. Ueber Hornhautverfarbung Klin;Von Hanssen;Monats, f. Augenh,1923