1. IEEE Standard for Local and Metropolitan Area Networks Part 15.4: Low-Rate Wireless Personal Area Networks (LR-WPANs),2011
2. IEEE Standard for Local and Metropolitan Area Networks Part 15.4: Low-Rate Wireless Personal Area Networks (LR-WPANs),2012
3. HART Communication Foundation Std., Version 7.4, Revised in 2012http://www.hartcomm.org/
4. http://www.isa.org/