@article{marchand1965the, title = {The Use of Noise Cancellation in Modern Telephone Practice and Design}, author = {Marchand, Gaston A.}, journal = {J. Audio Eng. Soc}, volume = {13}, number = {3}, pages = {218--221}, year = {1965}, url = {https://www.aes.org/e-lib/browse.cfm?elib=1202} }