Christian Decker Emilian Peev Till Riedel Martin Berchtold Michael Beigl Daniel Röhr Monty Beuster Using Auction Based Group Formation for Collaborative Networking in Ubicomp. 134-149 2007 conf/ucs/2007 UCS http://dx.doi.org/10.1007/978-3-540-76772-5_11 db/conf/ucs/ucs2007.html#DeckerPRBBRB07