1. The activity series of the metals
2. Metal Activity Series, Virtual Chemistry
Lab; http://dept.harpercollege.edu/chemistry/chm/100/dgodambe/thedisk/series/series.htm (accessed 2020-11-26).
3. Steinhaus, H. Mathematical Snapshots, 3rd ed. Dover: Mineola, NY, USA, 1999; pp 37–40.
4. Christian, B.; Griffiths, T. Algorithms to Live By: The Computer Science of Human Decisions; Picador: New York, 2017; pp 59–83.