1. (3) J. Wotschke: Grundlagen des elektrischen Schmelzofens. (1913)
2. (4) F. V. Andreae : The reactance of large rectangular three phase electric furnace. Trans. Elect. Chem. Soc. Vol. 57 p. 151-168.
3. (5) F. Walter : Zur Entwicklung von Lichtbogenöofen grosser Leistungsfähigkeit. Elektrowiirme, 1935 S. 25-31, 53-58, 87-90.
4. (6) A. A. Meyer : Electrical characteristics of electric furnace. Trans. Amer. Elect. Chem. Soc. Vol. 31, p. 97.
5. (7) Catani : The calculation of electric furnace circuits. Trans. A. I. E. E. 1928 p. 125-155.