%0 Journal Article %A Clozel, Laurent %T Presentation of an Iwasawa algebra: the case of $\Gamma_1{SL}(2,\Bbb Z_p)$ %J Documenta mathematica %D 2011 %P 545-559 %V 16 %I mathdoc %U http://geodesic.mathdoc.fr/item/DOCMA_2011__16__a17/ %G en %F DOCMA_2011__16__a17