@article{SEDP_1988-1989____A1_0,
     author = {G\'erard, C.},
     title = {Th\'eorie des r\'esonances pour des op\'erateurs de {Schr\"odinger} p\'eriodiques},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:1},
     pages = {1--9},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1988-1989},
     mrnumber = {1032277},
     zbl = {0705.35089},
     language = {fr},
     url = {http://archive.numdam.org/item/SEDP_1988-1989____A1_0/}
}