%0 Journal Article
%A Koichi Yano
%T The homotopy class of non-singular Morse-Smale vector fields on 3-manifolds.
%J Inventiones mathematicae
%D 1985
%P 435-452
%V 80
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM_1985__80_143238/
%F IM_1985__80_143238