@conference{gaidarov2002a, title = {A Problem of Efficiency of Loudspeakers}, author = {Gaidarov, Alexander}, booktitle = {Audio Engineering Society Conference: 21st International Conference: Architectural Acoustics and Sound Reinforcement}, month = {Jun}, year = {2002}, url = {https://www.aes.org/e-lib/browse.cfm?elib=11170} }