%0 Journal Article
%A van Vleck, F.S.
%T A bifurcation theorem for a class of differential equations
%J Portugaliae mathematica
%D 1965
%P 125-130
%V 24
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PORMA_1965__24_3_114958/
%G en
%F PORMA_1965__24_3_114958