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