1. AASHTO. 1993. Guide for design of pavement structures, Washington, DC, American Association of State Highway Transportation Officials.
2. Alberta Transportation and Utilities. 1997. Pavement design manual, Alberta Transportation, Edmonton, AB.
3. ARA Inc., ERES Consultants Division. 2004. Guide for mechanistic-empirical design of new and rehabilitated pavements structures, Champaign, IL, National Cooperative Highway Research Program (NCHRP), Transportation Research Board, National Research Council.
4. ASTM C 136-06. 2006. Standard test methods for sieve analysis of fine and coarse aggregates, West Conshohocken, PA, ASTM C 136-06.
5. ASTM D 698-07. 2007. Standard test methods for laboratory compaction characteristics of soil using standard effort, West Conshohocken, PA, ASTM D 698-07.