@article{beaubien1963a, title = {A Report of FM Stereo at the CCIR Study Group X Conference in Bad Kreuznach, Germany}, author = {Beaubien, William H.}, journal = {J. Audio Eng. Soc}, volume = {11}, number = {1}, pages = {2--5}, year = {1963}, url = {https://www.aes.org/e-lib/browse.cfm?elib=829} }