@article{schroeder1962correlation, title = {Correlation Techniques for Speech Bandwidth Compression}, author = {Schroeder, Manfred R.}, journal = {J. Audio Eng. Soc}, volume = {10}, number = {2}, pages = {163--166}, year = {1962}, url = {https://www.aes.org/e-lib/browse.cfm?elib=857} }