%0 Journal Article
%A Taam, Choy-Tak
%T Non-oscillation and comparison theorems of linear differential equations with complex-valued coefficients
%J Portugaliae mathematica
%D 1953
%P 57-72
%V 12
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PORMA_1953__12_2_114714/
%G en
%F PORMA_1953__12_2_114714