@article{Oep:Fli:Usz:00,
  author = {Stephan Oepen and Dan Flickinger and Hans Uszkoreit and J. Tsujii},
  title = {Introduction to this Special Issue},
  journal = {Natural Language Engineering},
  editor = {Flickinger, Dan and Oepen, Stephan and 
            Tsujii, Jun-ichi and Uszkoreit, Hans},
  volume = {6 (1) ({S}pecial Issue on Efficient Processing with {HPSG})},
  pages = {1$\,$--$\,$14},
  year = 2000
}