@article{small1972closed, title = {Closed-Box Loudspeaker Systems-Part 1: Analysis}, author = {Small, Richard H.}, journal = {J. Audio Eng. Soc}, volume = {20}, number = {10}, pages = {798--808}, year = {1972}, url = {https://www.aes.org/e-lib/browse.cfm?elib=2022} }