D. McDowall, R. McCleary, E. Meidinger, и R. Jr.. Sage university papers; Series: Quantitative applications in the social sciences; 21 Sage Publications, Inc., (1983)
L. Backstrom, и J. Kleinberg. Proceedings of the 17th ACM Conference on Computer Supported Cooperative Work &\#38; Social Computing, стр. 831--841. New York, NY, USA, ACM, (2014)
S. Doerfel, R. Jäschke, и G. Stumme. ICFCA 2012, том 7278 из Lecture Notes in Artificial Intelligence, стр. 77--95. Berlin/Heidelberg, Springer, (2012 (forthcoming))