1. |
Journal of the Operational Research Society
1984 : JUN, VOL. 35:6, p. 527-536
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1984 |
Graham, R. J.
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2. |
International Journal of Project Management
1988 : NOV, VOL. 6:4, p. 241-244
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1988 |
Churchill, G. F.
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3. |
Diebold Management Report
1993 : 4, p. 16,18-21
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1993 |
Füting, Ulrich Christian
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