@article {TicLieFab07,
    AUTHOR = {Tich{\'y}, Petr and Liesen, J{\"o}rg and Faber, Vance},
     TITLE = {On worst-case {GMRES}, ideal {GMRES}, and the polynomial
              numerical hull of a {J}ordan block},
   JOURNAL = {Electron. Trans. Numer. Anal.},
  FJOURNAL = {Electronic Transactions on Numerical Analysis},
    VOLUME = {26},
      YEAR = {2007},
    NUMBER = {},
     PAGES = {453--473},
}