@conference{beigelbeck2004near, title = {Near Field Beam Forming in Security Relevant Workspaces Using a Set of Linear Loudspeaker Arrays}, author = {Beigelbeck, Roman and Pichler, Heinrich}, booktitle = {Audio Engineering Society Convention 116}, month = {May}, year = {2004}, url = {https://www.aes.org/e-lib/browse.cfm?elib=12730} }