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Birgitte Kornum, Gitte M. Knudsen: Cognitive testing of pigs (Sus scrofa) in translational biobehavioral research. In: Neuroscience and biobehavioral reviews. Bd. 35, Nr. 3, Januar 2011, ISSN1873-7528, S. 437–451, doi:10.1016/j.neubiorev.2010.05.004, PMID 20553757, (Review).
Keller Breland, Marian Breland: A field of applied animal psychology. In: The American psychologist. Bd. 6, Nr. 6, Juni 1951, ISSN0003-066X, S. 202–204, doi:10.1037/h0063451, PMID 14847139.
Birgitte Kornum, Gitte M. Knudsen: Cognitive testing of pigs (Sus scrofa) in translational biobehavioral research. In: Neuroscience and biobehavioral reviews. Bd. 35, Nr. 3, Januar 2011, ISSN1873-7528, S. 437–451, doi:10.1016/j.neubiorev.2010.05.004, PMID 20553757, (Review).
Keller Breland, Marian Breland: A field of applied animal psychology. In: The American psychologist. Bd. 6, Nr. 6, Juni 1951, ISSN0003-066X, S. 202–204, doi:10.1037/h0063451, PMID 14847139.