1. Wikipedia. Wi-Fi (2013), en.wikipedia.org/wiki/Wi-Fi
2. IEEE. IEEETM 802.11 Wireless Local Area Networks (2013), grouper.ieee.org/groups/802/11
3. Google Patents. Wireless LAN: US 5487069 A (1996), http://www.google.com/patents/US5487069
4. MarketsandMarkets. Global Wi-Fi Market worth $93.23 Billion By 2018 (2013), www.marketsandmarkets.com/PressReleases/global-wi-fi.asp
5. Wikipedia. Municipal wireless network (2013), http://en.wikipedia.org/wiki/Municipal_wireless_network