Gold.Published in:Africa Research Bulletin: Economic, Financial & Technical Series, 2010, v. 47, n. 8, p. 18816C, doi. 10.1111/j.1467-6346.2010.03469.xPublication type:Article
Gold.Published in:Africa Research Bulletin: Economic, Financial & Technical Series, 2008, v. 45, n. 9, p. 18003Publication type:Article