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@ARTICLE{Krcher:726929,
      author       = {Kärcher, Mark and Boyaval, Sébastien and Grepl, Martin A.
                      and Veroy-Grepl, Karen},
      title        = {{R}educed basis approximation and a posteriori error bounds
                      for 4{D}-{V}ar data assimilation},
      journal      = {Optimization and engineering},
      volume       = {19},
      number       = {3},
      issn         = {1389-4420},
      address      = {Dordrecht [u.a.]},
      publisher    = {Springer Science + Business Media B.V},
      reportid     = {RWTH-2018-225322},
      pages        = {663-695},
      year         = {2018},
      note         = {First Online: 04 June 2018},
      cin          = {316320 / 112620 / 110000},
      ddc          = {690},
      cid          = {$I:(DE-82)316320_20150602$ / $I:(DE-82)112620_20140620$ /
                      $I:(DE-82)110000_20140620$},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000441772200006},
      doi          = {10.1007/s11081-018-9389-2},
      url          = {https://publications.rwth-aachen.de/record/726929},
}