@article{SEDP_1986-1987____A9_0,
     author = {Helffer, B.},
     title = {Op\'erateurs de {Schr\"odinger} avec champ magn\'etique},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:10},
     pages = {1--14},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1986-1987},
     mrnumber = {920028},
     zbl = {0634.35057},
     language = {fr},
     url = {http://www.numdam.org/item/SEDP_1986-1987____A9_0/}
}