Qualitative modelling via constraint programming DOI: 10.1007/s10601-014-9158-6 AuthorsThomas W. Kelsey, Lars Kotthoff, Christopher A. Jefferson, Stephen A. Linton, Ian Miguel, Peter Nightingale, Ian P. Gent Constraints 19 (2), April 2014 Publication dateWednesday, April 30, 2014 - 12:00