%0 Journal Article %A T.M. Bisgaard %T On the continuity of convolution semigroups. %J Semigroup forum %D 1989 %P 363-370 %V 39 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1989__39_2_134997/ %F SF_1989__39_2_134997