Rene I. Jenkins 
Bluetooth and Wireless Local Area Networks [PDF ebook] 
Security Guides

Bluetooth is an open standard for short-range radio frequency communication. Bluetooth technology is used primarily to establish wireless personal area networks (WPANs), and it has been integrated into many types of business and consumer devices. This book provides information on the security capabilities of both Bluetooth technologies and wireless local networks and gives recommendations to organizations on securing them effectively.