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Author | Title | Year | Publication | Serial | Volume | Pages |
---|---|---|---|---|---|---|
Xia, L.; Siemann, M.; Delius, J.D. | Matching of numerical symbols with number of responses by pigeons | 2000 | Animal Cognition | 3163 | 3 | 35-43 |
von Fersen, L.; Delius, J.D. | Acquired equivalences between auditory stimuli in dolphins (Tursiops truncatus) | 2000 | Animal Cognition | 3342 | 3 | 79-83 |