%0 Journal Article %A Naito, Manabu %T Oscillation Criteria for Second Order Ordinary Differential Equations %J Canadian mathematical bulletin %D 2020 %P 276-286 %V 63 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/S0008439519000262/ %R 10.4153/S0008439519000262 %F 10_4153_S0008439519000262