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@article{MS2_1982__51_166801, author = {Calle Jacobsson}, title = {On the double {Poincar\'e} series of the enveloping algebras of certain graded {Lie} algebras.}, journal = {Mathematica Scandinavica}, pages = {45--58}, publisher = {mathdoc}, volume = {51}, year = {1982}, zbl = {0499.16018}, url = {http://geodesic.mathdoc.fr/item/MS2_1982__51_166801/} }
Calle Jacobsson. On the double Poincaré series of the enveloping algebras of certain graded Lie algebras.. Mathematica Scandinavica, Tome 51 (1982), pp. 45-58. http://geodesic.mathdoc.fr/item/MS2_1982__51_166801/