Eduard Deines Martin Bertram Jan Mohring Jevgenij Jegorovs Frank Michel Hans Hagen Gregory M. Nielson Comparative Visualization for Wave-based and Geometric Acoustics. 1173-1180 2006 12 IEEE Trans. Vis. Comput. Graph. 5 http://doi.ieeecomputersociety.org/10.1109/TVCG.2006.125 db/journals/tvcg/tvcg12.html#DeinesBMJMHN06