%0 Journal Article %A Lusztig, G. %T Subregular Nilpotent Elements and Bases in $K$ -Theory %J Canadian journal of mathematics %D 1999 %P 1194-1225 %V 51 %N 6 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1999-053-1/ %R 10.4153/CJM-1999-053-1 %F 10_4153_CJM_1999_053_1