1. Marcet Intelligence Center: Global Mobile Phone Subscribers Expected to Reach 3.3 Billion by 2011. [
http://mic.iii.org.tw/english/press/research_PR.asp?func=press&Doc_sqno=4641
]
2. Wikipedia: List of mobile network operators of Europe. [
http://en.wikipedia.org/wiki/List_of_mobile_network_operators_of_Europe
]
3. MobilTeleBranshen: Mobiltelefonförsäljningen i Sverige 2006 (Mobile telephone sale in Sweden 2006). [
http://www.mtb.se/
]
4. SCENIHR (Scientific Committee on Emerging and Newly Identified Health Risks): Possible effects of Electromagnetic Fields (EMF) on Human Health. [
http://ec.europa.eu/health/ph_risk/committees/04_scenihr/docs/scenihr_o_007.pdf
]
5. Hardell LO, Carlberg M, Soderqvist F, Hansson Mild K, Morgan LL: Long-term use of cellular phones and brain tumours - increased risk associated with use for > 10 years. Occup Environ Med. 2007