@article{JEDP_1982____A18_0, author = {L\'evy-Bruhl, Pierre}, title = {Conditions suffisantes de r\'esolubilit\'e locale d'op\'erateurs invariants \`a gauche sur des groupes nilpotents}, journal = {Journ\'ees \'equations aux d\'eriv\'ees partielles}, eid = {18}, publisher = {Ecole polytechnique}, year = {1982}, zbl = {0489.35023}, language = {fr}, url = {http://archive.numdam.org/item/JEDP_1982____A18_0/} }