Stoop, Jan; van Soest, Daan and Vyrastekova, Jana (2011): Carrots without Bite: On the Ineffectiveness of 'Rewards' in sustaining Cooperation in Social Dilemmas. Unpublished.
Stoop, Jan; Noussair, Charles and van Soest, Daan (2010): From the lab to the field: Cooperation among fishermen. Unpublished.
Noussair, Charles; van Soest, Daan and Stoop, Jan (2011): Punishment, reward, and cooperation in a framed field experiment. Unpublished.
