International Transactions in Operational Research
International Transactions in Operational Research > 18 > 4 > 493 - 511
International Transactions in Operational Research > 20 > 3 > 365 - 389
International Transactions in Operational Research > 23 > 5 > 861 - 874
International Transactions in Operational Research > 24 > 5 > 1139 - 1172