TY - JOUR AU - Cernea, Aurelian TI - On a nonconvex boundary value problem for a first order multivalued differential system JO - Archivum mathematicum PY - 2008 SP - 237 EP - 244 VL - 44 IS - 3 UR - http://geodesic.mathdoc.fr/item/ARM_2008_44_3_a7/ LA - en ID - ARM_2008_44_3_a7 ER -