1. A short history of the electrical stimulation of excitable tissue including electrothcrapeutic applications;Geddes;Physiologist,1984
2. History of electrodiagnosis;Licht,1971
3. 2000 years of electrical stimulation;McNeal,1977
4. Encyclopedia of Medical Devices and Instrumentation,1988
5. Principles of Applied Biomedical Instrumentation;Geddes,1989