Ranjbar-Sahraei, B., H. Bou Ammar, D. Bloembergen, K. Tuyls, and G. Weiss. “Theory of Cooperation in Complex Social Networks”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 28, no. 1, June 2014, doi:10.1609/aaai.v28i1.8890.