• FCC Part 15 Regulations: http://www.access.gpo.gov/nara/cfr/waisidx_04/47cfr15_04.html
• European Short Range Radio Regulations: http://www.ero.dk/doc98/official/pdf/rec7003e.pdf?frames=0
• Federal Communications Commission (FCC): http://www.fcc.gov
• European Telecommunications Standards Institute (ETSI): http://www.etsi.org
• European Conference of Postal and Telecommunications Administrations (CEPT): http://www.ero.dk
• Government Telecommunication Sites In Other Countries: http://www.fcc.gov/mb/audio/bickel/world-govt-telecom.html