@string{IWPT:00 = {Proceedings of the 6th
                   {I}nternational {W}orkshop on {P}arsing {T}echnologies}}

@inproceedings{Kie:Kri:00,
  author = {Bernd Kiefer and Hans-Ulrich Krieger},
  title = {A context-free approximation of 
           {H}ead-Driven {P}hrase {S}tructure {G}rammar},
  booktitle = IWPT:00,
  year = 2000,
  pages = {135$\,$--$\,$146},
  address = {Trento, Italy}
}