1. ASTM, 2003, "standard test method: D 1557: Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft-lb/ft3 (2,700 KN-m/m3))", Current edition approved Nov. 10, 2002. Published in January 2003. ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
2. ASTM, 2005, "standard test method: D 1883-05: Standard Test Method for CBR (California Bearing Ratio) of Laboratory-Compacted Soils, ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
3. Bennert, T., and Maher, A. The Development of a Performance Specification for Granular Base and Subbase Material. Rutgers University, Piscataway, NJ, 2005.
4. Collins, R.J., and Ciesielski, S.K., (1994) Recycling and Use of Waste Materials and By-Products in Highway Construction. NCHRP Synthesis 199. Transportation Research Board of the National Academies, Washington, DC.
5. Cong Luo, (2014) High-Performance Granular Base and Subbase Material Incorporating Reclaimed Asphalt Concrete Pavement, McMaster University.