%0 Journal Article
%A D.R.J. Chillingworth
%T Winding Numbers on Surfaces II. Applications.
%J Mathematische Annalen
%D 1972
%P 131-154
%V 199
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1972__199_162320/
%F MAN_1972__199_162320