1. AZOM (2021) Azo Materials. https://www.azom.com/article.aspx?ArticleID=3528 (last accessed May 2021)
2. BSEF (2021) International Bromine Council. www.bsef.com (last accessed May 2021)
3. Encyclopedia Britannica. Bromine. https://www.britannica.com/science/bromine
4. Gray T, Mann N (2009) The elements. Black Dog & Leventhal Publishers Inc., New York
5. ICL (2021) Bromine Retardants. https://www.icl-ip.com/flame-retardants/ (last accessed May 2021)