1. C. W. W. Ng and B. Menzies, Advanced Unsaturated Soil Mechanics and Engineering, Taylor & Francis, Abingdon, 6-270 (2007)
2. A. Anandarajah, Computational Methods in Elasticity and Plasticity Solids and Porous Media, Springer, New York, 189-254 (2010).
3. S. Pramusand, A. Rifa, and K. B. Suryolelono, "Determination of unsaturated soil properties and slope deformation analysis due to the effect of varies rainfall," Procedia Eng., 125, 376-382 (2015).
4. Y.-J. Zhang, "2D elastoplastic finite element analysis for coupled hydro-mechanical processes in saturated-unsaturated media," Chin. J. Rock Mech. Eng., 24, No. 17, 3045-3051 (2005)
5. A. Alizadeha and B. Gatmiriab, "An elasto-plastic damage model for argillaceous geomaterials," Appl. Clay Sci., 135, 82-94 (2017).