@article{etna_vol16_pp1-29,
  author  = {Stefano Serra Capizzano and Cristina Tablino Possio},
  title   = {Preconditioning strategies for 2D finite difference matrix sequences},
  journal = {Electron. Trans. Numer. Anal.},
  volume  = {16},
  year    = {2003},
  pages   = {1--29},
}