@article{etna_vol10_pp92-114,
  author  = {Ignacio M. Llorente and N. Duane Melson},
  title   = {Behavior of plane relaxation methods as multigrid smoothers},
  journal = {Electron. Trans. Numer. Anal.},
  volume  = {10},
  year    = {2000},
  pages   = {92--114},
}