International Transactions in Operational Research
International Transactions in Operational Research > 26 > 4 > 1451 - 1474
International Transactions in Operational Research > 26 > 5 > 1884 - 1905
International Transactions in Operational Research > 26 > 6 > 2179 - 2198
International Transactions in Operational Research > 27 > 3 > 1277 - 1319
International Transactions in Operational Research > 31 > 3 > 1458 - 1485