The evolution of cooperation, Science, vol.211, issue.4489, 1984. ,
DOI : 10.1126/science.7466396
The Gift: Forms and Functions of Exchange in Archaic Societies [Essai sur le don], 1954. ,
What is Twitter, a social network or a news media?, Proceedings of the 19th international conference on World wide web, WWW '10, 2010. ,
DOI : 10.1145/1772690.1772751
A measurement-driven analysis of information propagation in the flickr social network, Proceedings of the 18th international conference on World wide web, WWW '09, 2009. ,
DOI : 10.1145/1526709.1526806
Exchange and Power in Social Life, 1964. ,
Please, subscribe to me! Analysing the structure and dynamics of the YouTube network, 2009. ,
Motivational, structural and tenure factors that impact online community photo sharing, 2009. ,
Why We Twitter: An Analysis of a Microblogging Community, WebKDD/SNA-KDD, pp.118-138, 2007. ,
DOI : 10.1086/225469
Social networks that matter: Twitter under the microscope, First Monday, vol.14, issue.1, 2009. ,
The Karma of Digg: Reciprocity in Online Social Networks, 2008. ,
Characterization of friendfeed -a web-based social aggregation service, 2009. ,
Social networks and social information filtering on digg, 2006. ,
Characterizing the youtube video-sharing community, Federal University of Minas Gerais (UFMG), 2007. ,