1. ANSYS, 2011. ANSYS user's manual. Houston, TX: Swanson Analysis Systems Inc.
2. Arnold, G., 2004. Rutting of granular pavements. Thesis (PhD). University of Nottingham, UK.
3. ASTM D2850-03a, 2003. Standard test method for unconsolidated – undrained triaxial compression test on cohesive soils. Philadelphia, PA: American Society for Testing and Materials.
4. ASTM D3282, 2009. Standard practice for classification of soils and soil–aggregate mixture for highway construction purposes. Philadelphia, PA: American Society for Testing and Materials.
5. ASTM D5311, 2004. Standard test method for load controlled cyclic triaxial strength of soil. Philadelphia, PA: American Society for Testing and Materials.