@article{LePaPe00a,
  author=       {Robert Michael Lewis and Anthony T. Patera 
                 and Jaume Peraire},
  title=        {A posteriori finite element bounds for sensitivity
                 derivatives of partial-differential-equation outputs},
  journal=      {Finite Elements in Analysis and Design},
  volume=       {34},
  number=       {3--4},
  month=        {February},
  year=         {2000},
  pages=        {271--290},
  url=          {http://dx.doi.org/10.1016/S0168-874X(99)00043-8},
  doi=          {10.1016/S0168-874X(99)00043-8}
}