1.2.2 Informative References
[ETSI-GSM] European Telecommunications Standards Organization, "GSM UMTS 3GPP Numbering Cross Reference", March 2008, http://webapp.etsi.org/key/key.asp?GSMSpecPart1=06&GSMSpecPart2=10&Search=search
[MSDN-WAVEFMTEXT] Microsoft Corporation, "WAVEFORMATEXTENSIBLE", http://msdn.microsoft.com/en-us/library/ms713496.aspx