@inproceedings{argelich,
  author = {J. Argelich and R. Béjar and A. Cabiscol and C. Fernàndez and F. Manyà and C. P. Gomes},
  title = {Generating hard Satisfiable Scheduling Instances},
  booktitle = {ECP-01. Sixth European Conference on Planning, Toledo, Spain},
  year = {2001},
  pages = {361-366}
}