TY - JOUR AU - Mohammed Guedda TI - Nonuniqueness of solutions to differential equations for boundary-layer approximations in porous media JO - Comptes Rendus. Mécanique PY - 2002 SP - 279 EP - 283 VL - 330 IS - 4 PB - Elsevier DO - 10.1016/S1631-0721(02)01458-4 LA - en ID - CRMECA_2002__330_4_279_0 ER -