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http://ebiquity.umbc.edu/tag/bartering/
UMBC ebiquity research group
http://ebiquity.umbc.edu
http://ebiquity.umbc.edu/img/logo.jpg<![CDATA[Opportunistic Bartering of Digital Goods and Services in Pervasive Environments]]>
http://ebiquity.umbc.edu/paper/html/id/430/Opportunistic-Bartering-of-Digital-Goods-and-Services-in-Pervasive-Environments
2007-08-04