Open Science Research Excellence
A. Rifa’i and  Y. Takeshita and  M. Komatsu,  Determination of Unsaturated Soil Permeability Based on Geometric Factor Development of Constant Discharge Model.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology. September 2016, vol. 117(9). 934 - 939[viewed 17 August 2019]. Available from: