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Milo, R., Itzkovitz, S., Kashtan, N., Levitt, R., Shen-Orr, S., Ayzenshtat, I., et al. (2004). Superfamilies of Evolved and Designed Networks. Science, 303(5663), 1538–1542.
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Gabor, V., & Gerken, M. (2012). Cognitive testing in Shetland ponies (Equus caballus) using a computer based learning device. In K. Krueger (Ed.), Proceedings of the 2. International Equine Science Meeting (Vol. in press). Wald: Xenophon Publishing.
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Milo, R., Shen-Orr, S., Itzkovitz, S., Kashtan, N., Chklovskii, D., & Alon, U. (2002). Network Motifs: Simple Building Blocks of Complex Networks. Science, 298(5594), 824–827.
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Quesada, J., Kintsch, W., & Gomez, E. (2005). Complex problem-solving: a field in search of a definition? Theor Issues Ergon Sci, 6(1), 5–33.
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Cheney, D., Seyfarth, R., & Smuts, B. (1986). Social relationships and social cognition in nonhuman primates. Science, 234(4782), 1361–1366.
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Croney, C. C., & Millman, S. T. (2007). BOARD-INVITED REVIEW: The ethical and behavioral bases for farm animal welfare legislation. J. Anim Sci., 85(2), 556–565.
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Flack, J. C., Krakauer, D. C., & de Waal, F. B. M. (2005). Robustness mechanisms in primate societies: a perturbation study. Proc Biol Sci, 272(1568), 1091–1099.
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Berger, A., & Wolfram, M. (2012). How to come together best? – Studies on integration processes of Przewalski horses into new groups (Equus ferus przewalskii). In K. Krueger (Ed.), Proceedings of the 2. International Equine Science Meeting (Vol. in press). Wald: Xenophon Publishing.
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Plotnik, J. M., de Waal, F. B. M., & Reiss, D. (2006). Self-recognition in an Asian elephant. Proc. Natl. Acad. Sci. U.S.A., 103(45), 17053–17057.
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Slingerland, L. I., Robben, J. H., Schaafsma, I., & Kooistra, H. S. (2008). Response of cats to familiar and unfamiliar human contact using continuous direct arterial blood pressure measurement. Research in Veterinary Science, 85(3), 575–582.
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