1. Wellkang Consulting, Brief introduction of directive 2002/96/EC of 27 January 2003 on waste electrical and electronic equipment (WEEE). http://www.weeeregistration.com/weee-directive.html . Accessed 15 July 2014
2. 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 L 037, pp. 19–23, February 13, 2003. http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:32002L0095:EN:HTML . Accessed 15 July 2014
3. European Commision, Restriction of hazardous substances in electrical and electronic equipment. http://ec.europa.eu/environment/waste/rohs_eee/legis_en.htm . Updated 7 February 2014, accessed 15 July 2014
4. M. Pecht, Review of high lead solder and lead glass rohs exemption. http://rohs.exemptions.oeko.info/fileadmin/user_upload/Stakeholder_comments/Exemption-7a_5_Pecht_Uni_Maryland_25_March_2008.pdf . Accessed 15 July 2014
5. M. Pecht, Y. Fukuda, S. Rajagopal, The impact of lead-free legislation exemptions on the electronics industry. IEEE Trans. Electron. Packag. Manuf. 27(4), 221–232 (2004)