%0 Journal Article %A Allegretto, W. %T Oscillation Criteria for Quasilinear Equations %J Canadian journal of mathematics %D 1974 %P 931-947 %V 26 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-088-0/ %R 10.4153/CJM-1974-088-0 %F 10_4153_CJM_1974_088_0