Robert P. Mensforth: Warfare and Trophy Taking in the Archaic Period. In: Olaf H. Prufer, Sara E. Pedde, Richard S. Meindl (Hrsg.): Archaic Transitions in Ohio and Kentucky Prehistory. Kent State University Press 2001, S. 110–138.
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Michael Russo: Measuring Shell Rings for Social Inequality, in: Jon L. Gibson, Philip J. Carr (Hrsg.): Signs of Power – The Rise of Cultural Complexity in the Southeast, University of Alabama Press, 2004, S. 26–70.