1. Henri B. Beer, U.S. patent 4,425,217 (10 January 1984).
2. J.K. Walker and J.I. Bishara, Anodes for Electrowinning, ed. Douglas Robinson and Stephen James (Warrendale, PA: The Metallurgical Society of AIME, 1984), pp. 79–86.
3. Carl W. Brown, Jr. et al., U.S. patent 6,139,705 (31 October 2000).
4. Michael S. Moats et al. (Presented at the Randol Copper Hydrometallurgy Roundtable, Tucson, AZ, 5–8 September 2000).
5. K.L. Hardee and M.S. Moats, Electrochemistry in Mineral and Metal Processing V, ed. R. Woods and F.M. Doyle (Pennington NJ: The Electrochemical Society, 2000), pp. 294–302.