1. AASHTO 1991 Standard method of test for resilient modulus of subgrade soils and untreated base/subbase materials, AASHTO designation T 292-91 Standard Specifications for Transportation Materials and Methods of Sampling and Testing, Part II, Methods of Sampling and Testing American Association of State Highway and Transportation Officials Washington, D.C
2. AASHTO 1993 AASHTO Guide for Design of Pavement Structures American Association of State Highway and Transportation Officials Washington, D.C
3. ASTM 2001a Annual Book of ASTM Standards, Road and Paving Materials; Vehicle Pavement Systems American Society of Testing and Materials West Conshohocen, PA 04.03 Section 4
4. ASTM 2001b Annual Book of ASTM Standards, Soil and Rock (II): D4943-Latest; Geosynthetics American Society of Testing and Materials West Conshohocen, PA 04.09 Section 4
5. Berg R.R. Christopher B.R. Perkins S.W. 2000 Geosynthetic Reinforcement of the Aggregate Base Course of Flexible Pavement Structures, GMA White Paper II Geosynthetic Materials Association Roseville, MN 130