1. www.epa.gov/iris/toxreviews/0144-tr.pdf.
2. P. Spathis, E. Papastergiadis, G. Stalidis, G. Papanastasiou, The Journal of Corrosion Science and Engineering, JCSE, vol. 3, paper 3 First electronic Journal on Corrosion. ISSN 1466-8858, located http://www2.umist.ac.uk/corrosion/JCSE, Bob Cottis (Ed.).
3. Strategies for the replacement of chromic acid anodising for the structural bonding of aluminium alloys
4. 28th Annual Aerospace/Airline Plating and Metal Finishing Forum and Exposition San Diego, CA, April 20–23;Koop,1992
5. EU Patent, EP 2055 810A2, 2009.