Efficient identification of starters and followers in social media.

Michael Mathioudakis Nick Koudas Efficient identification of starters and followers in social media. 708-719 2009 EDBT http://doi.acm.org/10.1145/1516360.1516442 conf/edbt/2009 db/conf/edbt/edbt2009.html#MathioudakisK09