@TechReport{	  it:2001-023,
  author	= {Pierre Flener and Alan Frisch and Brahim Hnich and Zeynep
		  Kiziltan and Ian Miguel and Toby Walsh},
  title		= {Matrix Modelling},
  institution	= {Department of Information Technology, Uppsala University},
  department	= {Computing Science Division},
  year		= {2001},
  number	= {2001-023},
  month		= sep,
  abstract	= {We argue that constraint programs with one or more
		  matrices of decision variables provide numerous benefits,
		  as they share many patterns for which general methods can
		  be devised, such as for symmetry breaking. On a wide range
		  of real-life application domains, we demonstrate the
		  generality and utility of such matrix modelling. },
  note		= {Also released as Technical Report APES-36-2001 of the APES
		  group, 2001, available at
		  \url{http://www.dcs.st-and.ac.uk/~apes/reports/apes-36-2001.ps.gz}.
		  Appears in the Proceedings of the CP-01 Workshop on
		  Modelling and Problem Formulation. 7th International
		  Conference on the Principles and Practice of Constraint
		  Programming, 2001}
}