Bouchemella, S.Seridi, A.Alimi-Ichola, I.2015-05-212015-05-21201519648189https://dspace.univ-boumerdes.dz123456789/1126enFlow processMixed formPressure formRichards's equationUnsaturated soilsWater content formNumerical simulation of water flow in unsaturated soils : comparative study of different forms of richardss equationArticle