@article{harvey1961subjective, title = {Subjective Evaluation of Factors Affecting Two-Channel Stereophony}, author = {Harvey, F. K. and Schroeder, Manfred R.}, journal = {J. Audio Eng. Soc}, volume = {9}, number = {1}, pages = {19--28}, year = {1961}, url = {https://www.aes.org/e-lib/browse.cfm?elib=487} }