TY - JOUR AU - Frič, Roman TI - Extension of measures: a categorical approach JO - Mathematica Bohemica PY - 2005 SP - 397 EP - 407 VL - 130 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/MB.2005.134212/ DO - 10.21136/MB.2005.134212 LA - en ID - 10_21136_MB_2005_134212 ER -