Müller, W., &; Ullmann, F. (1999). Scalable System for 3D Audio Raytracing. https://doi.org/10.1109/MMCS.1999.778592__Proceedings IEEE International Conference on Multimedia Computing and Systems.https://doi.org/10.1109/MMCS.1999.778592 
LibreCat: /record/39477
DOI: 10.1109/MMCS.1999.778592