MATH  A. Scholl, R. Klein, and W. Domschke. Pattern based vocabulary building for effectively sequencing mixed-model assembly lines. Journal of Heuristics, 0:000-000, 0000.CrossRefMATH  F. Silva and D. Serra. Locating emergency services with different priorities: The priority queuing covering location problem. Journal of the Operational Research Society, 00:0000-0000, 0000