@inproceedings{ConstraintTractability,
  title = "Constraint Tractability Theory And Its Application to the Product Development Process for a Constraint-Based Scheduler",
  author = "Lisa Purvis and Peter Jeavons",
  year = "1999",
  booktitle = "Proceedings of the 1st International Conference on The Practical Application of Constraint Technologies and Logic Programming",
  note = "This paper was awarded First Prize in the Constraints Technologies area of PACLP'99",
  pages = "63--79",
  url = "http://cse.unl.edu/~choueiry/F03-421-821/Documents/LP-PACLP.doc",
}