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| Author | Title | Year | Publication | Serial | Volume | Pages  |
|---|---|---|---|---|---|---|
| Saayman, G.S. | Behaviour of the adult males in a troop of free-ranging Chacma baboons (Papio ursinus) | 1971 | Folia Primatologica; International Journal of Primatology | 2053 | 15 | 36-57 |
| Wolf, M.; van Doorn, G.S.; Leimar, O.; Weissing, F.J. | Wolf et al. reply | 2007 | 4297 | 450 | E5-E6 | |
| Halford; G.S.; Halford, J.M . | Secondary reinforcement: signal or substitute reward? A preliminary investigation | 1969 | 3588 |