@article{SEDP_1992-1993____A23_0,
     author = {Grigis, A. and Mohamed, A.},
     title = {R\'esultats de finitude pour les lacunes spectrales},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:23},
     pages = {1--5},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1992-1993},
     language = {fr},
     url = {http://archive.numdam.org/item/SEDP_1992-1993____A23_0/}
}