@inproceedings{penn-hoetmer:2003,
  author    = {Penn, Gerald and Hoetmer, Kenneth},
  title     = {In search of epistemic primitives in the {English Resource Grammar} (or {Why HPSG} can't live without higher-order datatypes)},
  booktitle = {{Proceedings of the 10th International Conference on Head-Driven Phrase Structure Grammar, Michigan State University}},
  editor    = {Müller, Stefan},
  OPTissn   = {15351793},
  doi       = {10.21248/hpsg.2003.18},
  publisher = {CSLI Publications},
  address   = {Stanford, CA},
  pages     = {318--337},
  year      = {2003},
}

@inproceedings{penn-hoetmer:2003-cr,
  crossref  = {HPSG2003},
  author    = {Penn, Gerald and Hoetmer, Kenneth},
  title     = {In search of epistemic primitives in the {English Resource Grammar} (or {Why HPSG} can't live without higher-order datatypes)},
  doi       = {10.21248/hpsg.2003.18},
  pages     = {318--337},
}

@proceedings{HPSG2003,
  editor    = {Müller, Stefan},
  title     = {{Proceedings of the 10th International Conference on Head-Driven Phrase Structure Grammar, Michigan State University}},
  booktitle = {{Proceedings of the 10th International Conference on Head-Driven Phrase Structure Grammar, Michigan State University}},
  publisher = {CSLI Publications},
  address   = {Stanford, CA},
  OPTissn   = {15351793},
  year      = {2003},
}