Grätz, Tilo Department 'Integration and Conflict', MPI for Social Anthropology, Max Planck Society;
https://www.eth.mpg.de/pubs/institute-reports/pdf/mpi-eth-institute-report-sonderausgabe-2005-de#page=88 (Publisher version)
Grätz, T. (2005). Goldgräber in Westafrika.