1. Modern African Wars: the Congo 1960–2002;Abbot,2014
2. This is what we die for: Human rights abuses in the Democratic Republic of the Congo power the global trade in cobalt,2016
3. Sustainability of artisanal mining of cobalt in DR Congo;Banza Lubaba Nkulu;Nat. Sustain.,2018
4. Cobalt : Policy Options for a Strategic Mineral;Barbera,1982
5. Congo Sees Rautenbach as Root of CAMEC's Problems;Bavier,2007