@InProceedings{Buhr2014_numerically_stable,
  author     = {Buhr, A. and Engwer, C. and Ohlberger, M. and Rave, S.},
  title      = {A Numerically Stable a Posteriori Error Estimator for Reduced Basis Approximations of Elliptic Equations},
  booktitle  = {Proceedings of the 11th World Congress on Computational Mechanics},
  year       = {2014},
  editor     = {E. Onate, X. Oliver and A. Huerta},
  pages      = {4094--4102},
  publisher  = {CIMNE, Barcelona},
  issn       = {978-84-942844-7-2}
}