%0 Journal Article %A Lee Rudolph %T Braided surfaces and Seifert ribbons for closed braids. %J Commentarii mathematici Helvetici %D 1983 %P 1-37 %V 58 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1983__58_139927/ %F CMH_1983__58_139927