1. Pischinger, S.; Lange, B.; Heuer, S.; Hoppermanns, J.: Objektivierung subjektiver Geräuschbeurteilungen. In: MTZ 67 (2006), No. 11
2. Ingham, R.; Otto, N.; McCollum, T.: Sound Quality Metric for Diesel Engines. SAE Technical Paper Series 1999-01-1819, 1999
3. Heinrichs, R.; Bodden, M.: Perceptual and Instrumental Description of the Gear Rattle Phenomenon for Diesel Vehicles. 6th International Congress on Sound and Vibration, 1999
4. Lee, D.D.; Seung, H.S.: Algorithms for Non-Negative Matrix Factorization. Neural Information Processing Systems, 2000
5. Smaragdis, P.: Non-Negative Matrix Factor Deconvolution: Extraction of Multiple Sound Sources from Monophonic Inputs. International Symposium on Independent Component Analysis and Blind Source Separation (ICA), 2004