%0 Journal Article %A Nicolas Spaltenstein %T Nilpotent Classes and Sheets of Lie Algebras in Bad Characteristic. %J Mathematische Zeitschrift %D 1982 %P 31-48 %V 181 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1982__181_173215/ %F MZ_1982__181_173215