1. Ambroz, J.K. & Darter, M.I. (2005). Rehabilitation of jointed Portland cement concrete pavements, SPS 6-initial evaluation and analysis. Federal Highway Administration (FHWA) Report FHWA-RD-01-169. Washington, DC, USA.
2. Collucci Rios, B. & Sinha, K.C. (1985). Optimal pavement management approach using roughness measurements. Transportation Research Record No 1048 (pp. 14–22). Washington, DC, USA: Transportation Research Board, National Research Council.
3. Darter, M.I., Smith, R.E. & Shahin, M.Y. (1985). Use of life cycle cost analysis as the basis for determining the cost effectiveness of maintenance and rehabilitation treatments for developing a network level assignment procedure. North American Pavement Management Conference Proceedings (Vol. 2) (pp. 7.5–7.18). Toronto, Ontario, Canada.
4. Federal Highway Administration (FHWA). (1999a). Long-term pavement performance-introduction to LTPP data. Washington, DC: Office on Infrastructure Research and Development.
5. Federal Highway Administration (FHWA). (1999b). Status of the Nation's highways, bridges, and transit. Conditions and performance report 1999 – Chapter 3, Available from http://www.fhwa.dot.gov/policy/1999cpr/ch_03/cpm03_1.htm [Accessed December 2011].