@article {GSl99,
  AUTHOR = {Genseberger, Menno and Sleijpen, Gerard L.G.},
   TITLE = {Alternative correction equations in the {J}acobi-{D}avidson method},
 JOURNAL = {Numer. Linear Algebra Appl.},
FJOURNAL = {Numerical Linear Algebra with Applications},
  VOLUME = {6},
    YEAR = {1999},
   PAGES = {235--253},}
%% Preprint 1073, Dep.\ Math., University Utrecht (June, 1998).