1. Tyre/road noise reference book;Sandberg,2002
2. REGULATION (EC) No 661/2009 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 13 July 2009 concerning type-approval requirements for the general safety of motor vehicles, their trailers and systems, components and separate technical units intended therefore; 2009.
3. REGULATION (EC) No 1222/2009 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 25 November 2009 on the labelling of tyres with respect to fuel efficiency and other essential parameters; 2009.
4. UNECE Regulation 117. Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and to adhesion on wet surfaces; 2007.
5. International Organization for Standardization ISO/CD 11819-2, Acoustics – Method for measuring the influence of road surfaces on traffic noise – Part 2: “The Close Proximity Method”; 2000.