1. Bauer, B. B. and C. D. Mee. A new model for magnetic recording. IRE Trans. Audio
AU-9: 139–45 (1961).
2. Bertram, N. Long wavelength ac bias recording theory. IEEE Trans. on Magnetics
MAG-10: 1039–49 (1974).
3. Bertram H. N., M. K. Stafford, and D. R. Mills. The print-through phenomenon. J. Audio Eng. Soc.
28: 690–705 (1980).
4. G. W. Carpenter and W. L. Carlson, U. S. Patent 1,640,881 (August 30, 1927).
5. M. Camras, U. S. Patent 2,351,004 (June 13, 1944).