%0 Journal Article %A Willett, D. %T Asymptotic Behaviour of Disconjugate nth Order Differential Equations %J Canadian journal of mathematics %D 1971 %P 293-314 %V 23 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1971-030-4/ %R 10.4153/CJM-1971-030-4 %F 10_4153_CJM_1971_030_4