Sebastian Kaune Konstantin Pussep Gareth Tyson Andreas Mauthe Ralf Steinmetz Cooperation in P2P Systems through Sociological Incentive Patterns. 10-22 2008 IWSOS http://dx.doi.org/10.1007/978-3-540-92157-8_2 conf/iwsos/2008 db/conf/iwsos/iwsos2008.html#KaunePTMS08