1. Modified impression method of artificial eye fitting;Allen;Am. J. Ophthalmol.,1969
2. A quasi-integrated buried muscle cone implant with good motility and advantages for prostetic fitting;Allen;Trans. Am. Acad. Ophthalmol. Otolaryngol.,1960
3. A larger Iowa implant;Allen;Am. J. Ophthalmol.,1969
4. A buried muscle cone implant - development of a tunneled hemispherical type;Allen;Arch. Ophthalmol.,1950
5. Fitting the ocular prosthesis: a challenge;Allen;Trans. Am. Acad. Ophthalmol. Otolaryngol.,1970