@inproceedings{engelhardt,
  author = {B. Engelhardt and S. Chien and A. Barrett and J. Willis and C. Wilklow},
  title = {The DATA-CHASER and Citizen Explorer Benchmark Problem Sets},
  booktitle = {ECP-01. Sixth European Conference on Planning, Toledo, Spain},
  year = {2001},
  pages = {97-108}
}