TY - RPRT TI - An active region model for capturing fractal flow patterns in unsaturated soils: model development. AU - H H Liu AU - R Zhang AU - G S Bodvarsson PY - 2005 DO - 10.1016/j.jconhyd.2005.07.002 UR - https://pubmed.ncbi.nlm.nih.gov/16099535/ ID - 16099535 ER -