1. Selection of subgrade modulus for AASHTO flexible pavement design;Elliot R.P.;Transportation Research Record,1992
2. Case Study Reports, publication no. FHWA-HRT-16-010;FHWA,2017
3. STAC (2014a) Technical guidance for rational design method for flexible airfield pavements http://www.stac.aviation-civile.gouv.fr/