01137nas 2200397 a 450 99621097460331620240112003755.01872-6860(OCoLC)38945639(CKB)954921393016(CONSER) 2003233348(DE-599)ZDB1501061-2(EXLCZ)9995492139301619980414a19779999 sy aengurmnu|||||European journal of operational research[e-journal][Amsterdam] Elsevier ScienceRefereed/Peer-reviewed0377-2217 EJOREJOREUROPEAN J. OPER. RESEUR J OPEREUR J OPER RESEur. j. oper. res.EUR. J. OPER. RESOperations researchPeriodicalsPeriodicals.Operations researchAssociation of European Operational Research Societies.JOURNAL996210974603316European journal of operational research795276UNISAHealth Sciences