@article{10_4153_CJM_1998_012_3,
     author = {Benkart, Georgia},
     title = {Derivations and {Invariant} {Forms} of {Lie} {Algebras} {Graded} by {Finite} {Root} {Systems}},
     journal = {Canadian journal of mathematics},
     pages = {225--241},
     year = {1998},
     volume = {50},
     number = {2},
     doi = {10.4153/CJM-1998-012-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1998-012-3/}
}