| 1 | Potts, D. and Zdravkovic L. Finite element analysis in geotechnical engineering- Theory. Thomas Telford, 1999. |
| 2 | Potts, D.M. and Zdravkovic L., 2001, Finite element analysis in geotechnical engineering: Application, Thomas Telford. |
| 3 | BRINKGREVE, R.B.J., 2002. Plaxis Manual. Rotterdam: Balkema. |
| 4 | Andrew Schofield and Peter Wroth 1968. Critical State Soil Mechanics, |