@conference{takami1981flat, title = {Flat Frequency Response Speaker System Using Flush-Filled Flat Diaphragm}, author = {Takami, Norihiko and Kawamura, Shinichiro}, booktitle = {Audio Engineering Society Convention 70}, month = {Oct}, year = {1981}, url = {https://www.aes.org/e-lib/browse.cfm?elib=11948} }