@article{small1973vented, title = {Vented-Box Loudspeaker Systems--Part 1: Small-Signal Analysis}, author = {Small, Richard H.}, journal = {J. Audio Eng. Soc}, volume = {21}, number = {5}, pages = {363--372}, year = {1973}, url = {https://www.aes.org/e-lib/browse.cfm?elib=1967} }