Willer, David (1981). »Quantity and network structure.« In David Willer, and Bo Anderson, eds., Networks, Exchange and Coercion. The Elementary Theory and Its Applications, pp. 108-127. New York, Oxford: Elsevier.
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Willer, D. (1981). Quantity and network structure. New York, Oxford: Elsevier. Networks, Exchange and Coercion. The Elementary Theory and Its Applications, pp. 108-127.
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