1. Astigmatism and myopia in keratoconus;Troutman;Trans. Am. Ophthalmol. Soc.,1972
2. Microsurgical control of corneal astigmatism in cataract and keratoplasty;Troutman;Trans. Am. Acad. Ophthalmol. Otolaryngol.,1973
3. The use and preliminary results of the Troutman surgical keratometer in cataract and corneal surgery;Troutman;Trans. Am. Acad. Ophthalmol. Otolaryngol.,1977
4. Keratoplasty in keratoconus;Keates;Am. J. Ophthalmol.,1972
5. Der postoperative Astigmatismus nach perforierenden Keratoplastiken. Albrecht von Graefes Arch;Schwöbel;Klin. Exp. Ophthalmol.,1975