By Bensmaine Abderrahmane   Benyoucef Lyes   Sari Zaki   in International Journal of Services Operations and Informatics

ISSN:1741-539X|6|1-2|106-123

Inderscience Publishers‎(2011)‎

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By Grasman Scott E.   Sari Zaki   Sari Tewfik   in RAIRO - Operations Research

ISSN:0399-0559|41|4|455-464

Edp Sciences‎(2007)‎

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