1. 1) Agus, S.S., Leong, E.C., and Rahardjo, H. (2001): Soil-water characteristic curves of Singapore residual soils. Geotechnical and Geological Engineering, 19(3-4): 284 - 389.
2. 2) ASTM D6836-16, Standard Test Methods for Determination of the Soil Water Characteristic Curve for Desorption Using Hanging Column, Pressure Extractor, Chilled Mirror Hygrometer, or Centrifuge, ASTM International, West Conshohocken, PA, 2016, www.astm.org
3. 3) ASTM D7263-09(2018)e2, Standard Test Methods for Laboratory Determination of Density (Unit Weight) of Soil Specimens, ASTM International, West Conshohocken, PA, 2018, www.astm.org
4. 4) Bezerra-Coelho, C. R., Zhuang, L., Barbosa, M. C., Soto, M., and van Genuchten, M.Th. (2018): Further tests of the HYPROP evaporation method for estimating the unsaturated soil hydraulic properties, Journal of Hydrology and Hydromechanics, 66(2), 161-169. doi: https://doi.org/10.1515/johh-2017-0046
5. 5) Bishop, A. (1959): The principle of effective stress, Tek. Ukebl., 39, 859-863.