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Muehlheusser, Gerd; Roider, Andreas (2008). Black sheep and walls of silence. Journal of economic behavior & organization, 65(3-4), pp. 387-408. Amsterdam: Elsevier 10.1016/j.jebo.2005.11.004
Muehlheusser, Gerd; Roider, Andreas (June 2005). Black Sheep and Walls of Silence (Discussion Papers 04-10). Bern: Department of Economics
