Sutter, Matthias Max Planck Institute for Research on Collective Goods, Max Planck Society;
https://doi.org/10.1007/s10663-006-9026-8 (Any fulltext)
Kocher, M., & Sutter, M. (2007). Individual versus group behavior and the role of the decision making procedure in gift-exchange experiments. Empirica, 34, 63-88.