TY  - JOUR
AU  - Allegretto, Walter
TI  - Nonnegative Solutions for Weakly Nonlinear Elliptic Equations
JO  - Canadian journal of mathematics
PY  - 1984
SP  - 71
EP  - 83
VL  - 36
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1984-006-4/
DO  - 10.4153/CJM-1984-006-4
ID  - 10_4153_CJM_1984_006_4
ER  -