@article{olson1966research, title = {Research Towards a High Efficiency Voice Communication System}, author = {Olson, Harry F. and Belar, Herbert and Rogers, Edward S.}, journal = {J. Audio Eng. Soc}, volume = {14}, number = {3}, pages = {233--239}, year = {1966}, url = {https://www.aes.org/e-lib/browse.cfm?elib=1143} }