%0 Journal Article %A Erik Kjaer Pedersen %T Spines of Topological Manifolds. %J Commentarii mathematici Helvetici %D 1975 %P 41-44 %V 50 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1975__50_139606/ %F CMH_1975__50_139606