@article{10886,
  author = {Mats Larson and Axel M{\r a}lquist},
  title = {A Posteriori Error Estimates for Mixed Finite Element Approximations of Parabolic Problems},
  year = {2011},
  journal = {Numerische Mathematik},
  volume = {118},
  number = {1},
  pages = {33-48},
}