%0 Journal Article %A Elon L. Lima %T Common Singularities of Commuting Vector Fields on 2-manifolds. %J Commentarii mathematici Helvetici %D 1964 %P 97-110 %V 39 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1964__39_139284/ %F CMH_1964__39_139284