1. Rail noise control in Switzerland;Oertli;Journal of Sound and Vibration,1996
2. Cost–benefit analysis in railway noise control;Oertli;Journal of Sound and Vibration,2000
3. J. Oertli, European rail noise abatement, Internoise 2000, Nice, France, 2000.
4. F.B.J. Elbers, Consequences of noise creation quotas for railway in the Netherlands, NS Technisch Onderzoek, 1998.
5. L. de Boer, A. van Beek, Low noise trains in broad perspective, KPMG and NS Technisch Onderzoek, 1999.