The Anatomy of Cooperation
http://www.annualreviews.org/doi/abs/10.1146/annurev.soc.24.1.183
Sociological aspects of cooperation
Andreas Diekmann and Siegwart Lindenberg
https://edit.ethz.ch/socio/publications/spieltheorie/anwendungen/Diekmann_Lindenberg.pdf
Dynamic Social Networks Promote Cooperation in Experiments with Humans
http://sociology.yale.edu/publications/dynamic-social-networks-promote-cooperation-experiments-humans
