1. Auxiliary headrest mounting bracket for handicapped patients;Kilfoil;J Prosthet Dent,1977
2. Modified dental chair for patients in wheelchairs;Anderson;J Am Dent Assoc,1967
3. Dentistry for the Special Patient: The Aged, Chronically Ill, and Handicapped;Davidoff,1972
4. Headrest for patients in wheelchairs;McGowan;Br Dent J,1974
5. Stable head support for the wheelchair patient;Carsen;J Hosp Dent Pract,1970