@article{etna_vol12_pp134-148,
  author  = {Faker Ben Belgacem and Susanne C. Brenner},
  title   = {Some nonstandard finite element estimates with applications to 3D Poisson and Signorini problems},
  journal = {Electron. Trans. Numer. Anal.},
  volume  = {12},
  year    = {2001},
  pages   = {134--148},
}