%0 Journal Article %A Thomas Ransford %A Michel Valley %T Subharmonicity in von Neumann algebras %J Studia Mathematica %D 2005 %P 219-226 %V 170 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4064/sm170-3-1/ %R 10.4064/sm170-3-1 %G en %F 10_4064_sm170_3_1