RT Journal Article T1 A free boundary problem for a flow of fresh and salt groundwater with nonlinear Darcy’s law. A1 Carrillo Menéndez, José A1 Challal, S. A1 Lyaghfouri, A. AB We consider a free boundary problem related to a stationary flow of fresh and salt water in a coastal aquifer. The flow is governed by a nonlinear Darcy’s law.Existence and uniqueness of a monotone solution are proved. PB Tokyo: Gakkōtosho Co. Ltd.. SN 1343-4373 YR 2002 FD 2002 LK https://hdl.handle.net/20.500.14352/57409 UL https://hdl.handle.net/20.500.14352/57409 DS Docta Complutense RD 20 ene 2026