@string{IJCAI:91 = {Proceedings of the 12th {I}nternational {J}oint 
                    {C}onference on {A}rtificial {I}ntelligence}}

@inproceedings{Erbach:91b,
  author = {Gregor Erbach},
  title = {An Environment for Experimenting with Parsing Strategies},
  editor = {John Mylopoulos and Ray Reiter},
  booktitle = IJCAI:91,
  publisher = {Morgan Kaufmann Publishers},
  address = {San Mateo, CA},
  pages = {931$\,$--$\,$937},
  year = 1991
}