1. BECKER, R. O., BACHMAN, C. H., & FRIEDMAN, H. The direct current control system: A link between environment and organism. New York State Journal of Medicine, 1962, 62, 1169–1176.
2. BEISCHER, E. D., MILLER, E. F., & KNEPTON, J. C., JR. Exposure of man to low intensity magnetic fields in a coil system. Bureau of Medicine & Surgery, No. MR 005.04-0029.11, NASA Order R-37, October 3, 1967.
3. COWEN, M. A. The baseline transcephalic D.C. potential in normals. Journal of Psychiatric Research, 1965, 5, 307–315.
4. FRIEDMAN, H., BECKER, R. O., & BACHMAN, C. H. Direct current potentials in hypnoanalgesia. Archives of General Psychiatry, 1962, 7, 193–197.
5. FRIEDMAN, H., BECKER, R. O., & BACHMAN, C. H. Effect of magnetic fields on reaction time. Nature, 1967, 213, 949–956.