%0 Journal Article
%A Robert Gulliver
%T Branched Immersions of Surfaces and Reduction of Topological Type. II.
%J Mathematische Annalen
%D 1977
%P 25-48
%V 230
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1977__230_163027/
%F MAN_1977__230_163027