@article{etna_vol32_pp162-172,
  author  = {Heribert Blum and Andreas Rademacher and Andreas Schr\"oder},
  title   = {Space adaptive finite element methods for dynamic obstacle problems},
  journal = {Electron. Trans. Numer. Anal.},
  volume  = {32},
  year    = {2008},
  pages   = {162--172},
}