@article{poletti2015higher, title = {Higher-Order Loudspeakers and Active Compensation for Improved 2D Sound Field Reproduction in Rooms}, author = {Poletti, Mark A. and Betlehem, Terence and Abhayapala, Thushara D.}, journal = {J. Audio Eng. Soc}, volume = {63}, number = {1/2}, pages = {31--45}, year = {2015}, url = {https://www.aes.org/e-lib/browse.cfm?elib=17564} }