Grätz, Tilo Department I, MPI for Social Anthropology, Max Planck Society;
http://www.eth.mpg.de/cms/de/publications/working_papers/wp0036.html (beliebiger Volltext)
Grätz, T. (2002). Gold mining communities in Northern Benin as semi-autonomous social fields. Max Planck Institute for Social Anthropology Working Papers, 36.