TY - JOUR AU - Gil, O. AU - QuirĂ³s, F. TI - Boundary layer formation in the transition from the porous media equation to a Hele-Shaw flow JO - Annales de l'I.H.P. Analyse non linĂ©aire PY - 2003 SP - 13 EP - 36 VL - 20 IS - 1 PB - Elsevier UR - http://www.numdam.org/item/AIHPC_2003__20_1_13_0/ LA - en ID - AIHPC_2003__20_1_13_0 ER -