Edmund K. Burke Patrick De Causmaecker Greet Vanden Berghe Hendrik Van Landeghem The State of the Art of Nurse Rostering. 441-499 2004 7 J. Scheduling 6 http://dx.doi.org/10.1023/B:JOSH.0000046076.75950.0b db/journals/scheduling/scheduling7.html#BurkeCBL04