1. Facilitation hypothesis in the chiropractic theories: principles and clinical applications. 3rd ed;Leach,1994
2. A premise for instrumentation;Rademacher;Chiropr Tech,1994
3. Duff SA. Chiropractic clinical research, interpretation of spinal bilateral skin temperature differentials. San Francisco: Paragon Printing; 1976. p. vi–vii.
4. Bell’s palsy and the upper cervical spine;Kessinger;Chiropr Res J,1999