@article {LieTic04a,
    AUTHOR = {Liesen, J{\"o}rg and Tich{\'y}, Petr},
     TITLE = {The worst-case {GMRES} for normal matrices},
   JOURNAL = {BIT},
  FJOURNAL = {BIT. Numerical Mathematics},
    VOLUME = {44},
      YEAR = {2004},
    NUMBER = {1},
     PAGES = {79--98},
}