1. Allen , B. , Phillips , P. and Woodside , A. Prediction of UK surfacing skid resistance using Wehner Schulze and PSV . International conference managing road and runway surfaces to improve safety . Cheltenham, England
2. Al-Rousan, T.M., 2004 Characterization of aggregate shape properties using a computer automated system, Ph.D. Dissertation. College Station, TX
3. Cairney , P. Macrotexture and crash risk – some recent findings from Australia and their implications . 22nd ARRB conference – research into practice . Canberra, Australia
4. Chelliah, T., Stephanos, P., Shah, M.G. and Smith, T., 2003. Developing a design policy to improve pavement surface characteristics. Paper presented in Transportation Research Board 82nd annual meeting, Washington, DC