@InProceedings{ helmert-mattmueller-aaai2008,
  author    = "Malte Helmert and Robert Mattm{\"u}ller",
  title     = "Accuracy of Admissible Heuristic Functions in Selected Planning Domains",
  booktitle = "Proceedings of the 23nd AAAI Conference on Artificial Intelligence (AAAI 2008)",
  pages     = "938--943",
  publisher = "AAAI Press",
  year      = "2008",
}