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Aschwanden, Janine; Gygax, Lorenz; Wechsler, Beat; Keil, Nina Maria (2009). Loose housing of small goat groups: Influence of visual cover and elevated levels on feeding, resting and agonistic behaviour. Applied animal behaviour science, 119(3-4), pp. 171-179. Amsterdam: Elsevier 10.1016/j.applanim.2009.04.005
