@article{maxwell1953comparative, title = {Comparative Study of Methods for Measuring Nonlinear Distortion in Broadcasting Audio Facilities}, author = {Maxwell, Donald E.}, journal = {J. Audio Eng. Soc}, volume = {1}, number = {1}, pages = {68--78}, year = {1953}, url = {https://www.aes.org/e-lib/browse.cfm?elib=126} }