TY - JOUR AU - Sango, Mamadou TI - A spectral problem with an indefinite weight for an elliptic system JO - Electronic Journal of Differential Equations PY - 1997 VL - 1997 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EJDE_1997__1997__a4/ LA - en ID - EJDE_1997__1997__a4 ER -