London, Oxford University Press for the International Institute for Strategic Studies, 1999. Book call no. International 1997 Africa and the Middle East Volume 3 . Washington, U.S. Dept of the Interior and U.S. Geological Survey, 1999. The Mineral Industry of Mali by Philip M. Mobbs, p Z1-Z3.
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Binghamton, NY, CSA Publications, 1999. Gives details about the government of each country. Book call no. River Edge, NJ, World Scientific, 1998. Mali, an Experiment in Peace by Henny J. Van der Graff, pp 361-363.