%0 Journal Article
%A Wu Yi Hsiang
%T Addendum to the Paper Entitled: 
%J Commentarii mathematici Helvetici
%D 1975
%P 277-280
%V 50
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMH_1975__50_251484/
%F CMH_1975__50_251484