%0 Journal Article %A Williams, R.K. %T Some results on continuous flows %J Portugaliae mathematica %D 1978 %P 217-222 %V 37 %N 3-4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1978__37_3-4_115352/ %G en %F PORMA_1978__37_3-4_115352