%0 Journal Article %A Allegretto, W. %A Huang, Y. X. %T Existence of Positive Global Solutions of Mixed Sublinear-Superlinear Problems %J Canadian journal of mathematics %D 1988 %P 1222-1242 %V 40 %N 5 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1988-052-4/ %R 10.4153/CJM-1988-052-4 %F 10_4153_CJM_1988_052_4