1. Guide for Design of Pavement Structures;AASHTO,1993
2. Tabulated values for determining the complete pattern of stresses, strains, and deflections beneath a uniform circular load on a homogeneous half space;Ahlvin;Highw. Res. Board Bull.,1962
3. ARA Inc., 2004. ERES Consultants Division, Guide for Mechanistic-Empirical Design of New and Rehabilitated Pavement Structures, Final Report, NCHRP Project 1-37A.
4. Research and Development of the Asphalt Institute's Thickness Design Manual (MS-1);Asphalt Institute,1982
5. Berg, C, 2015, How Far Do Roads Contribute to Development?, World Bank Forum, https://www.weforum.org/agenda/2015/12/how-far-do-roads-contribute-to-development/. accessed on March 15, 2019.