1. Directive 2002/95/EC of the European parliament and of the council of 27 January 2003, on the restriction of the use of certain hazardous substances in electrical and electronic equipment, Official Journal of European Union, 13. 2. 2003.
2. Directive 2011/65/EC of the European parliament and of the council of 8 June 2011, on the restriction of the use of certain hazardous substances in electrical and electronic equipment (recast), Official Journal of European Union, 1. 7. 2011.
3. http://www.apple.com/lae/environment/faq/
4. Automatic analysis for halogens and sulfur in organic compounds by a coupled combustion/ion chromatography technique;Nagashima;Bunseki Kagaku,2000
5. BS EN 14582, Characterization of waste. Halogen and sulfur content. Oxygen combustion in closed systems and determination methods 2007.