%0 Journal Article %A Mohammed Guedda %T Nonuniqueness of solutions to differential equations for boundary-layer approximations in porous media %J Comptes Rendus. Mécanique %D 2002 %P 279-283 %V 330 %N 4 %I Elsevier %R 10.1016/S1631-0721(02)01458-4 %G en %F CRMECA_2002__330_4_279_0