%0 Journal Article %A Benkart, Georgia %T Derivations and Invariant Forms of Lie Algebras Graded by Finite Root Systems %J Canadian journal of mathematics %D 1998 %P 225-241 %V 50 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1998-012-3/ %R 10.4153/CJM-1998-012-3 %F 10_4153_CJM_1998_012_3