@article{DeMarcoSchmutzKoesterkeetal.1999,
  author    = {DeMarco, O. and Schmutz, W. and Koesterke, Lars and Hamann, Wolf-Rainer and DeMarco, O. and DeKoter, A.},
  title     = {Why should we compare WR codes?},
  year      = {1999},
  language  = {en}
}
@article{DeMarcoSchmutzKoesterkeetal.1999,
  author    = {DeMarco, O. and Schmutz, W. and Koesterke, Lars and Hamann, Wolf-Rainer},
  title     = {Gamma 2 Velorum revisited},
  year      = {1999},
  language  = {en}
}