@conference{vanderkooy2013active, title = {Active Acoustic Absorbers Revisited}, author = {Vanderkooy, John and Rousseau, Martial}, booktitle = {Audio Engineering Society Conference: 52nd International Conference: Sound Field Control - Engineering and Perception}, month = {Sep}, year = {2013}, url = {https://www.aes.org/e-lib/browse.cfm?elib=16909} }