International Transactions in Operational Research
International Transactions in Operational Research > 26 > 6 > 2531 - 2560
International Transactions in Operational Research > 29 > 1 > 87 - 112
International Transactions in Operational Research > 26 > 6 > 2531 - 2560
International Transactions in Operational Research > 29 > 1 > 87 - 112