1. Information received from ‘Verband der Chemischen Industrie’ (VCI), (Frankfurt am Main, Germany, 2002)
2. Chlorine, Electrolysis of Hydrochloric Acid, in Ullmann’s Encyclopedia of Industrial Chemistry, 7th ed., (WILEY-VCH, Weinheim, Electronic Release 2005)
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4. H. Isfort and W.-J. Stockmans, DECHEMA-Monographs 98 (1985) 141, VCH, Weinheim 1985
5. S. Motupally, A.J. Becker and J.W. Weidner, J. Electrochem. Soc. 149 (2002), Nr. 5, D63