| Author |
Title |
Year |
Publication |
Serial |
Volume |
Pages  |
| de Waal, F.B.; Berger, M.L. |
Payment for labour in monkeys |
2000 |
Nature |
190 |
404 |
563 |
| Brosnan, S.F.; Freeman, C.; De Waal, F.B.M. |
Partner's behavior, not reward distribution, determines success in an unequal cooperative task in capuchin monkeys |
2006 |
American journal of primatology |
160 |
68 |
713-724 |
| Sole, L.M.; Shettleworth, S.J.; Bennett, P.J. |
Uncertainty in pigeons |
2003 |
Psychonomic bulletin & review |
366 |
10 |
738-745 |
| Johnson, D.D.P.; Stopka, P.; Knights, S. |
Sociology: The puzzle of human cooperation |
2003 |
Nature |
467 |
421 |
911-2; discussion 912 |
