%0 Journal Article %A Arthur, James %T A trace formula for reductive groups. II : applications of a truncation operator %J Compositio Mathematica %D 1980 %P 87-121 %V 40 %N 1 %I Sijthoff et Noordhoff International Publishers %U http://archive.numdam.org/item/CM_1980__40_1_87_0/ %G en %F CM_1980__40_1_87_0