1. M.I. Hassan, A.T. Brimmo, M.O. Ibrahiem, and Y. Shatilla, Light Metals 2013, ed. B.A. Sadler (Hoboken: Wiley, 2013), pp. 851–855.
2. P.J. Black and B.J. Cooper, Light Metals 2016, ed. E. Williams (Hoboken: Springer, 2016), pp. 461–466.
3. Regulation No. 40 C.F.R. § 261.32, U.S Code of Federal Regulations (Washington, DC, 2003).
4. G. Hansen, Report No. EPA 530-R-12-001, U.S Environmental Protection Agency (Washington, DC, 2015).
5. R. Jeltsch, Essential Readings in Light Metals: Volume 4 Electrode Technology for Aluminum Production, eds. A. Tomsett and J. Johnson (Hoboken: Springer, 2016), pp. 888–893.