@article{nigro1953a, title = {A Stereodynamic Multichannel Amplifier for Single or Binaural Input}, author = {Nigro, John}, journal = {J. Audio Eng. Soc}, volume = {1}, number = {4}, pages = {287--291}, year = {1953}, url = {https://www.aes.org/e-lib/browse.cfm?elib=87} }