TY - JOUR AU - W. Allegretto TI - On Positive L? Solutions of a Class of Elliptic Systems. JO - Mathematische Zeitschrift PY - 1986 SP - 479 EP - 484 VL - 191 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZ_1986__191_173690/ ID - MZ_1986__191_173690 ER -