References/Notes/Attributions:
Source
Fox, J. and Guyer, M. (1978) Public choice and cooperation in n-person prisoner's dilemma. Journal of Conflict Resolution 22, 469–481.
References
Fox, J. (2016) Applied Regression Analysis and Generalized Linear Models, Third Edition. Sage.
Fox, J. and Weisberg, S. (2013) An R Companion to Applied Regression, Third Edition, Sage.