%0 Journal Article %A John Franks %T The periodic structure of non-singular Morse-Smale flows. %J Commentarii mathematici Helvetici %D 1978 %P 279-294 %V 53 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1978__53_139736/ %F CMH_1978__53_139736