Third-Party Cooperation: How Reducing Material Involvement Enhances Contributions to the Public Good
Personality and Social Psychology Bulletin (2016) - Comment
pubmed: 26865289  doi: 10.1177/0146167216629123  issn: 1552-7433  issn: 0146-1672 

Annabel B. Losecaat Vermeer, Roeland L. Heerema, Alan G. Sanfey