1. The spread of obesity in a large social network over 32 years;N. A. Christakis,2007
2. The collective dynamics of smoking in a large social network;N. A. Christakis,2008
3. Political participation and effects from the social environment;C. B Kenny,1992
4. A 61-million-person experiment in social influence and political mobilization;R. M Bond,2012
5. Experimental study of inequality and unpredictability in an artificial cultural market;M. J. Salganik,2006