@article{DreizlerWernerRauchetal.1997,
  author    = {S. Dreizler and Klaus Werner and Thomas Rauch and Lars Koesterke and Ulrich Heber},
  title     = {NLTE Analyses of PG 1159 stars : Contraints for the structure and evolutiuon of Post-AGB stars},
  year      = {1997},
}