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Fission–fusion populations

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Where sociality and relatedness diverge: the genetic basis for hierarchical social organization in African elephants

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Causes and Consequences of Sociality in Bats

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Fission-Fusion Dynamics, Behavioral Flexibility, and Inhibitory Control in Primates

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Communally breeding Bechstein's bats have a stable social system that is independent from the postglacial history and location of the populations

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On the topological properties of the world trade web: A weighted network analysis

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(2008) Tore Opsahl et al.   PHYSICAL REVIEW LETTERS