@INPROCEEDINGS{Vilim2002Precedence,
  author = {Petr Vil{\'i}m},
  title = {Batch Processing with Sequence Dependent Setup Times: New Results},
  booktitle = {Proceedings of the 4th Workshop of Constraint Programming for Decision
	and Control, CPDC'02},
  year = {2002},
  address = {Gliwice, Poland},
  url = {http://vilim.eu/petr/cpdc2002.pdf}
}