Reference Books and Documents
Friedhelm Hillebrand (editor): GSM and UMTS, the creation of Global Mobile Communication, Wiley 2001
www.etsi.org and DVD: GSM and SMG archives 1983 – 2000 (for ETSI members)
Ramersdorfer Str. 13, 53229 Bonn, Germany E-Mail: Copyright: Hillebrand & Partners 2010