1. IEEE Standard for Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: High-speed Physical Layer in the 5GHz Band 1999
2. IEEE Standard for Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications, Amendment 4: Further Higher Data Rate Extension in the 2.4GHz Band 2003
3. http://www.ieee802. org/15/pub/TG3a.html
4. http://www.ieee802. org/15/pub/TG4a.html
5. Revision of the commission's rules to insure compatibility with enhanced 911 emergency calling systems 1996