By Stafford E.F.   Tseng F.T.   in European Journal of Operational Research

ISSN:0377-2217|142|2|282-293

Elsevier‎(2002)‎

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By Tseng F. T.   Stafford E. F.   in International Journal of Production Research

ISSN:1366-588X|39|8|1777-1809

Taylor & Francis Ltd‎(2001)‎

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