1. J. Schramm: Z. Metallkd., 1936, vol. 28, p. 203.
2. J. Schramm: Z. Metallkd., 1937, vol. 29, p. 222.
3. Ernst Raub and Alice Schall: Z. Metallkd., 1938, vol. 30, p. 249.
4. D.R. Evans: The Sherardising Process, Ellis Horwood Limited, West Sussex, England, 1984.
5. S.W.K. Morgan: Zinc and Its Alloys and Compounds, Ellis Horwood Limited, West Sussex, England, 1985, pp. 206–07.