1. E. Cataldi-Spinola, Curve squealing mechanism of railway vehicles, Diss. ETH No. 17453, ETH Zurich, 2007.
2. R. Stefanelli, Kurvenkreischen: Untersuchung der Rahmenbedingungen, die zu Kreischen führen, und akustische Modellierung der kreischenden Räder (Curve squealing: Investigation of the General Conditions which lead to Squeal, and Acoustic Modelling of the Squealing Wheels), Diss. ETH No. 16686, ETH Zurich, 2006.
3. Das Kurvengeräusch der Strassenbahn (The curve noise of the tramway);Stappenbeck;VDI Zeitschrift des Vereins Deutscher Ingenieure,1954
4. H. Berglund, Stockholm tackles the noise problem, Railway Gazette International (1972) 254–259.
5. Wheel–rail noise generation, part V: inclusion of wheel rotation;Thompson;Journal of Sound and Vibration,1993