%0 Journal Article %A Frič, Roman %T Extension of measures: a categorical approach %J Mathematica Bohemica %D 2005 %P 397-407 %V 130 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/MB.2005.134212/ %R 10.21136/MB.2005.134212 %G en %F 10_21136_MB_2005_134212