1. AASHTO (2004) AASHTO LRFD Bridge Design Specifications 3rd Edition American Association of State and Highway Transportation Officials Washington DC.
2. AASHTO (2007) AASHTO LRFD Bridge Design Specifications 4th Edition American Association of State and Highway Transportation Officials Washington DC.
3. Allen T.M. Nowak A.S. and Bathurst R.J. (2005) "Calibration to Determine Load and Resistance Factors for Geotechnical and Structural Design " Transportation Research Circular E-C079 Transportation Research Board Washington D.C. 93 p.
4. Barker R.M. Duncan J.M. Rojiani K.B. Ooi P.S.K. Tan C.K. and Kim. S.G. (1991) "Manuals for the Design of Bridge Foundations " NCHRP Report 343 Transportation Research Board National Research Council Washington DC.
5. Calibration concepts for load and resistance factor design (LRFD) of reinforced soil walls