Backstrom, Lars ; Huttenlocher, Daniel P. ; Kleinberg, Jon M. ; Lan, Xiangyang ; Eliassi-Rad, Tina (Bearb.) ; Ungar, Lyle H. (Bearb.) ; Craven, Mark (Bearb.) ; Gunopulos, Dimitrios (Bearb.): Group formation in large social networks: membership, growth, and evolution.. In: KDD : ACM, 2006. - ISBN 1-59593-339-5, S. 44-54