1. A detailed, fully referenced account of the early attempts to isolate elemental silicon and of the various successful preparations, starting with that of Berzelius in 1824, can be found in: Gmelin Handbook of InorganicChemistry, 8th ed.; Springer-Verlag: New York, 1984; Si, Silicon, Part A1, History, pp 7−50.
2. Untersuchungen über die Flussspathsäure und deren merkwürdigsten Verbindungen
3. Die Identität von amorphem und kristallisiertem Silicium
4. Kane, R.Elements of Chemistry; American edition by Draper, J. W.; Harper and Brothers: New York, 1846; p 321.