@article{JLT_2002_12_2_JLT_2002_12_2_a1,
     author = {M. Gouleau },
     title = {Alg�bre de {Lie} {Nilpotente} {Gradu�e} de {Rang} 3 et {Inverse} d'un {Op�rateur} {Differentiel}},
     journal = {Journal of Lie theory},
     pages = {325--356},
     publisher = {mathdoc},
     volume = {12},
     number = {2},
     year = {2002},
     url = {http://geodesic.mathdoc.fr/item/JLT_2002_12_2_JLT_2002_12_2_a1/}
}