@article{schroeder1960the, title = {The Effect of ac Bias Waveform on Harmonic Distortion in Magnetic Tape Recording}, author = {Schroeder, Robert P.}, journal = {J. Audio Eng. Soc}, volume = {8}, number = {3}, pages = {192--198}, year = {1960}, url = {https://www.aes.org/e-lib/browse.cfm?elib=501} }