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[2] Stolte, G.: Secondary Metallurgy - Fundamentals Processes Applications. Düsseldorf, 2002, 216 p. ISBN 3-514-00648-2.
[3] Fruehan, R. J.: The Making, Shaping and Treating of Steel. Pittsburgh, USA, 1998, 759 p. ISBN: 0-930767-02-0.
[4] Knüppel, H.: Desoxydation in Vakuum - Behandlung von Stahlschmelzen, Düsseldorf, 1983, 286 p.