@article{langevin1963intermodulation, title = {Intermodulation Distortion in Tape Recording}, author = {Langevin, Robert Z.}, journal = {J. Audio Eng. Soc}, volume = {11}, number = {3}, pages = {270, 272, 274, 276, 278}, year = {1963}, url = {https://www.aes.org/e-lib/browse.cfm?elib=784} }