Pseudospectrum for differential operators
Séminaire Équations aux dérivées partielles (Polytechnique) (2002-2003), Talk no. 16, 9 p.
@article{SEDP_2002-2003____A16_0,
     author = {Sj\"ostrand, Johannes},
     title = {Pseudospectrum for differential operators},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique)},
     publisher = {Centre de math\'ematiques Laurent Schwartz, \'Ecole polytechnique},
     year = {2002-2003},
     note = {talk:16},
     mrnumber = {2030711},
     zbl = {1061.35067},
     language = {en},
     url = {http://www.numdam.org/item/SEDP_2002-2003____A16_0}
}
Sjöstrand, Johannes. Pseudospectrum for differential operators. Séminaire Équations aux dérivées partielles (Polytechnique) (2002-2003), Talk no. 16, 9 p. http://www.numdam.org/item/SEDP_2002-2003____A16_0/

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