@article{SEDP_1991-1992____A17_0,
     author = {Vassiliev, D. G.},
     title = {The distribution of eigenvalues of partial differential operators},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:17},
     pages = {1--17},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1991-1992},
     mrnumber = {1226496},
     zbl = {0779.58040},
     language = {en},
     url = {http://www.numdam.org/item/SEDP_1991-1992____A17_0/}
}