@article{SEDP_2005-2006____A10_0,
     author = {Trefethen, Lloyd N.},
     title = {Nonhermitian systems and pseudospectra},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:10},
     pages = {1--11},
     publisher = {Centre de math\'ematiques Laurent Schwartz, \'Ecole polytechnique},
     year = {2005-2006},
     mrnumber = {2276076},
     language = {en},
     url = {http://archive.numdam.org/item/SEDP_2005-2006____A10_0/}
}