By Avancini Henri   Straccia Umberto   in International Journal of Web Based Communities

ISSN:1477-8394|1|2|163-175

Inderscience Publishers‎(2005)‎

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By Avancini Henri   Candela Leonardo   Straccia Umberto   in Journal of Intelligent Information Systems

ISSN:0925-9902|28|3|253-283

Springer Publishing Company ‎(2007)‎

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