@inproceedings{beermann-hellan:2004,
  author    = {Beermann, Dorothee and Hellan, Lars},
  title     = {A treatment of directionals in two implemented {HPSG} grammars},
  booktitle = {{Proceedings of the 11th International Conference on Head-Driven Phrase Structure Grammar, Center for Computational Linguistics, Katholieke Universiteit Leuven}},
  editor    = {Müller, Stefan},
  OPTissn   = {15351793},
  doi       = {10.21248/hpsg.2004.20},
  publisher = {CSLI Publications},
  address   = {Stanford, CA},
  pages     = {357--377},
  year      = {2004},
}

@inproceedings{beermann-hellan:2004-cr,
  crossref  = {HPSG2004},
  author    = {Beermann, Dorothee and Hellan, Lars},
  title     = {A treatment of directionals in two implemented {HPSG} grammars},
  doi       = {10.21248/hpsg.2004.20},
  pages     = {357--377},
}

@proceedings{HPSG2004,
  editor    = {Müller, Stefan},
  title     = {{Proceedings of the 11th International Conference on Head-Driven Phrase Structure Grammar, Center for Computational Linguistics, Katholieke Universiteit Leuven}},
  booktitle = {{Proceedings of the 11th International Conference on Head-Driven Phrase Structure Grammar, Center for Computational Linguistics, Katholieke Universiteit Leuven}},
  publisher = {CSLI Publications},
  address   = {Stanford, CA},
  OPTissn   = {15351793},
  year      = {2004},
}