%0 Journal Article %A Alexander Merkurjev %A Nikita Karpenko %T Rost projectors and Steenrod operations %J Documenta mathematica %D 2002 %P 481-493 %V 7 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/129/ %R 10.4171/dm/129 %F 10_4171_dm_129