@article{HSl08,
    AUTHOR = {Hochstenbach, Michiel E. and Sleijpen, Gerard L. G.},
     TITLE = {Harmonic and refined extraction methods for the polynomial eigenvalue problem},
   JOURNAL = {Numer. Linear Algebra Appl.},
  FJOURNAL = {Numerical Linear Algebra with Applications},
    VOLUME = {15},
      YEAR = {2008},
    NUMBER = {1},
     PAGES = {35--54},
}