References
John J. Tilley
(2008). Reasons, rational requirements, and the putative pseudo-question "why be moral?". Synthese, 161 (2), 309-323. https://doi.org/10.1007/s11229-007-9164-y.
(1994). Accounting for the "tragedy" in the prisoner's dilemma. Synthese, 99 (2), 251-276. https://doi.org/10.1007/BF01064431.