1. Hall, J. W.; Smith, K. L.; Titus-Glover, L.; Wambold, J. C.; Yager, T.J.; Rado, Z. 2009. Guide for pavement friction. NCHRP. Web-only document 108. Contractor’s Final Report NCHRP Project 01-43. Transportation Research Board of the National Academes.
2. The Polished Stone Value of aggregates and in-service skidding resistance.;Roe P G,1998
3. Determination of the International Friction Index (IFI) using the Circular Texture Meter (CTM) and the Dynamic Friction Tester (DFT);Henry J J,2000
4. The skid resistance performance of natural New Zealand aggregates using a dynamic friction tester;Wilson D J;Quarterly Journal of Engineering Geology and Hydrogeology,2009