@ARTICLE {FSV98b,
   ANNOTE = {MR99e:65061},
   AUTHOR = {Fokkema, Diederik R. and Sleijpen, Gerard L. G. and Van der
             Vorst, Henk A.},
    TITLE = {Jacobi-{D}avidson style {Q}{R} and {Q}{Z} algorithms for the
             reduction of matrix pencils},
  JOURNAL = {SIAM J. Sci. Comput.},
 FJOURNAL = {SIAM Journal on Scientific Computing},
   VOLUME = {20},
     YEAR = {1999},
   NUMBER = {1},
    PAGES = {94--125 (electronic)},
     ISSN = {1095-7197},}