By Iakovou E.   Ip C.M.   Koulamas C.   in Annals of Operations Research

ISSN:0254-5330|91|1|41-47

Springer Publishing Company ‎(1999)‎

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By Iakovou E.   Ip C.M.   Koulamas C.   in European Journal of Operational Research

ISSN:0377-2217|92|1|63-68

Elsevier‎(1996)‎

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By Iakovou E.   Ip C.M.   Douligeris C.   Korde A.   in European Journal of Operational Research

ISSN:0377-2217|96|1|72-80

Elsevier‎(1997)‎

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