%0 Journal Article %T Weighted Averaging Techniques in Oscillation Theory for Second Order Difference Equations %J Canadian mathematical bulletin %D 1992 %P 61-69 %V 35 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1992-009-9/ %R 10.4153/CMB-1992-009-9 %F 10_4153_CMB_1992_009_9