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IRE Transactions on Engineering Management > 1962 > EM-9 > 1 > 3 - 10
IRE Transactions on Engineering Management > 1960 > EM-7 > 1 > 30 - 33
IRE Transactions on Engineering Management > 1962 > EM-9 > 1 > 3 - 10
IRE Transactions on Engineering Management > 1960 > EM-7 > 1 > 30 - 33