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@ARTICLE{Steffensen:540256,
      author       = {Steffensen, Sonja},
      title        = {{R}unge-{K}utta {S}chemes for {N}umerical {D}iscretization
                      of {B}ilevel {O}ptimal {C}ontrol {P}roblems},
      volume       = {434},
      reportid     = {RWTH-2015-05819},
      series       = {Preprint / Institut für Geometrie und PraktischeMathematik
                      der Rheinisch-Westfälischen Technischen Hochschule Aachen},
      year         = {2015},
      cin          = {114620 / 110000},
      cid          = {$I:(DE-82)114620_20140620$ / $I:(DE-82)110000_20140620$},
      typ          = {PUB:(DE-HGF)25},
      url          = {https://publications.rwth-aachen.de/record/540256},
}