1. Finite element analysis in engineering analysis;Bathe,1982
2. Brinkreve, R.B.J., Engin, E & Swolfs, W.M. (2012). PLAXIS 3D 2012. User Manuals. Plaxis bv, The Netherlands.
3. Chang, C.S., Adegoke, C.W. & Selig, E.T. (1979). A study of analytical models for track support systems. Transportation Research Board Record 733, Washington D.C., pp.12-19.
4. Chang, C.S., Adegoke, C.W. & Selig, E.T. (1980). The GEOTRACK model for railroad track performance. Journal of Geotechnical Engineering Division, ASCE, Vol. 106, No. GT11, November, pp.1201-1218.
5. Huang, Y.H., Lin, C. & Deng, X (1984). Hot mix asphalt for railroad trackbeds – structural evaluation for military railroads. Miscellaneous Paper GL-85-3, Final Report, Waterways Experiment Station, Corps of Engineers, Vicksburg, Mississippi, March.