Or and simulation in combination for optimization - van Dijk, Nico M.; van der Sluis, Erik; Haijema, Rene; Al-Ibrahim, Assil; van der Wal, Jan; Stirn, LZ; Zerovnik, J; Drobne, S; Lisec, A (Proceedings of the 10th International Symposium on Operational Research in Slovenia, SOR 2009, 2009)