@article{SEDP_1980-1981____A16_0,
     author = {Laurent, Y.},
     title = {Deuxi\`eme microlocalisation, condition de {L\'evi} pour un syst\`eme},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:15},
     pages = {1--11},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1980-1981},
     mrnumber = {657984},
     zbl = {0505.58034},
     language = {fr},
     url = {http://www.numdam.org/item/SEDP_1980-1981____A16_0/}
}