1. Residual stresses and strength of hard chromium coatings;Pfeiffer;Mater Sci Forum,2011
2. Chromium electroplating: National Emission Standards for hazardous air pollutants;United States Environmental Protection Agency;Fed Regist,2012
3. Nomorehex.org, Available from: http://nomorehex.org/. [Accessed 19 September 2017].
4. Surface Engineering Association, Hexavalent chromium in electroplating: prevention and control of skin exposure risks. Available from: http://www.sea.org.uk/filemanager/root/site_assets/hexavalent_chrome/chromic_acid.pdf. [Accessed 19 September 2017].