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802.11a: An Excellent Long Term Solution
Since the debut of 802.11a products in 2001, network managers have been struggling with whether to install 802.11b or 802.11a. Here's why you should strongly consider the use of 802.11a for your next wireless LAN deployment.
Wi-Fi Planet Tutorial Series
Wireless LAN Tools: Analyze This.
Polar Cove Whitepaper (PDF)
Layer 2 Analysis of WLAN Discovery Applications for Intrusion Detection - By Joshua Wright, GCIH, CCNA.