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*Heinsohn, R. and Packer, C. 1995. Complex cooperative strategies in group-territorial African lions. Science 269: 1260-1262.
*Jahn, G. C. 1996. "Lioness Leadership," Letters. Science 271: 1215.
*Morell, V. 1995. Cowardly lions confound cooperation theory. Science 269: 1216-1217.
==External links (also used as reference)==
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