Ulrik Brandes Daniel Delling Marco Gaertler Robert Görke Martin Hoefer Zoran Nikoloski Dorothea Wagner On Finding Graph Clusterings with Maximum Modularity. 121-132 2007 conf/wg/2007 WG http://dx.doi.org/10.1007/978-3-540-74839-7_12 db/conf/wg/wg2007.html#BrandesDGGHNW07