1. Humphry Davy, “VII. Additional Experiments on Galvanic Electricity”, Journal of Natural Philosophy, Chemistry, and the Arts (Nicholson’s Journal), London, Vol.IV, October 1800, 326–328.
2. Sir Humphry Davy, Elements of Chemical Philosophy: Part 1 Vol.1 (London: J. Johnson and Co., St Paul’s Church Yard, 1812), p.85 and Plate III, Fig.18.
https://archive.org
/details/elementschemicaOOdavygoog
3. English patents, No. 4208 of 1878 and No. 2110 of 1879.
4. R.T. Jones and T.R. Curr, “Pyrometallurgy at Mintek”, Southern African Pyrometallurgy 2006, Edited by R.T. Jones, SAIMM, Johannesburg, 5–8 March 2006, pp. 127–150.
http://www.mintek.co.za
/Pyromet/Files/2006JonesMintek.pdf
5. R.T. Jones, T.R. Curr, and N.A. Barcza, “Developments in Plasma Furnace Technology”, High-Intensity Pyrometallurgy, The Institution of Mining and Metallurgy, 4 February 1993, London.
http://www.mintek.co.za
/Pyromet/Files/PlasmaDev.pdf