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@PHDTHESIS{Randerath:55091,
      author       = {Randerath, Hubert},
      title        = {{T}he {V}izing bound for the chromatic number based on
                      forbidden pairs; {A}ls {M}s. gedr.},
      address      = {Aachen},
      publisher    = {Shaker},
      reportid     = {RWTH-CONV-117235},
      isbn         = {3-8265-4271-1},
      series       = {Berichte aus der Mathematik},
      pages        = {131 S. : graph. Darst.},
      year         = {1998},
      note         = {Zugl.: Aachen, Techn. Hochsch., Diss., 1998},
      cin          = {100000},
      cid          = {$I:(DE-82)100000_20140620$},
      typ          = {PUB:(DE-HGF)11 / PUB:(DE-HGF)3},
      url          = {https://publications.rwth-aachen.de/record/55091},
}