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@article{MZ_1982__180_173178, author = {N.R. Wallach and A. Rocha-Caridi}, title = {Projective {Modules} over {Graded} {Lie} {Algebras.} {I.}}, journal = {Mathematische Zeitschrift}, pages = {151--178}, publisher = {mathdoc}, volume = {180}, year = {1982}, zbl = {0467.17006}, url = {http://geodesic.mathdoc.fr/item/MZ_1982__180_173178/} }
N.R. Wallach; A. Rocha-Caridi. Projective Modules over Graded Lie Algebras. I.. Mathematische Zeitschrift, Tome 180 (1982), pp. 151-178. http://geodesic.mathdoc.fr/item/MZ_1982__180_173178/