@conference{boner1964a, title = {A Procedure for Controlling Room-Ring Modes and Feedback Modes in Sound Systems with Narrow-Band Filters}, author = {Boner, C. Paul and Boner, C. R.}, booktitle = {Audio Engineering Society Convention 16}, month = {Oct}, year = {1964}, url = {https://www.aes.org/e-lib/browse.cfm?elib=624} }