%0 Journal Article %A Kottwitz, Robert E. %T Base change for unit elements of Hecke algebras %J Compositio Mathematica %D 1986 %P 237-250 %V 60 %N 2 %I Martinus Nijhoff Publishers %U http://www.numdam.org/item/CM_1986__60_2_237_0/ %G en %F CM_1986__60_2_237_0