%0 Journal Article %A J. KisyƄski %T A remark on continuity of one-parameter semi-groups of operators %J Colloquium Mathematicum %D 1968 %P 277-284 %V 19 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-19-2-277-284/ %R 10.4064/cm-19-2-277-284 %G en %F 10_4064_cm_19_2_277_284