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European Journal of Operational Research > 2007 > 177 > 3 > 1948-1968
Computers in Industry > 2001 > 44 > 2 > 175-187
European Journal of Operational Research > 2007 > 177 > 3 > 1948-1968
Computers in Industry > 2001 > 44 > 2 > 175-187