%0 Journal Article %A Thomson, B. S. %T Outer Measures and Total Variation %J Canadian mathematical bulletin %D 1981 %P 341-345 %V 24 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1981-051-0/ %R 10.4153/CMB-1981-051-0 %F 10_4153_CMB_1981_051_0