https://www.birmingham.ac.uk/news-archive/2018/gender-effects-and-third-party-punishment-in-social-dilemma-games
By Piardini, Paola and Drouvelis, Michalis and Di Cagno, Daniela (Birmingham Business School Discussion Paper Series 2017-03).
third party punishmentsocial dilemmagendereffectsgames