@article{etna_vol22_pp97-113,
  author  = {P. B. Bochev and R. B. Lehoucq},
  title   = {Regularization and stabilization of discrete saddle-point variational problems},
  journal = {Electron. Trans. Numer. Anal.},
  volume  = {22},
  year    = {2006},
  pages   = {97--113},
}