1. Gaertner , Heiko Ratviki , Arne Petter Aarhaug , Thor Anders “Impurity Elements in Raw Gas Ultra-Fines from Aluminium Electrolysis Cells”, Light Metals 2012, pp. 839-844
2. Lindsay , Stephen J. Dando , Neal R. “Dry Scrubbing for Modern Pre-Bake Cells”, Light Metals 2009, pp. 275-280
3. Altenpohl , Dietrich G. editor, “Aluminum: Technology, Applications, and Environment”, Wiley Publishing, Chapter 2, section 2.2.4, p. 17, ISBN 87-339-406-2, also found at http://www.tms.org/pubs/books/4062.chapter2.pdf