@TECHREPORT {SvG09,
   AUTHOR = {Sleijpen, Gerard L.G. and {van Gijzen}, Martin B.},
    TITLE = {{BiCGstab($\ell$)} strategies to induce dimension reduction},
       TYPE = {Report},
     NUMBER = {ISSN 1389-6520},
INSTITUTION = {Department of Applied Mathematical Analysis},
    ADDRESS = {Delft University of Technology, the Netherlands},
      MONTH = {Februari},
       YEAR = {2009},}


@article{SvG10,
   author = {Gerard L. G. Sleijpen and Martin B. van Gijzen},
collaboration = {},
    title = {Exploiting {B}i{CG}stab($\ell$) Strategies to Induce Dimension Reduction},
publisher = {SIAM},
     year = {2010},
  JOURNAL = {SIAM J. Sci. Comput.},
 FJOURNAL = {SIAM Journal on Scientific Computing},
   volume = {32},
   number = {5},
    pages = {2687-2709},
 keywords = {Bi-CGSTAB; 
             Bi-CG; 
             iterative linear solvers; 
             Krylov subspace methods; 
             induced dimension reduction},
     url = {http://link.aip.org/link/?SCE/32/2687/1},
     doi = {10.1137/090752341}}