Table 1 from The underlying technologies in WSNs: ZigBee vs. wireless HART | Semantic Scholar
Chapter 2 History and Background. Evolution of HART The HART protocol has evolved from a 4– 20mA based protocol to the current wired and wireless-based. - ppt download
WirelessHART Overview - Wi-Fi Vitae
Trade-offs selecting a wireless instrumentation protocol | Industrial Ethernet Book
PHOENIX CONTACT | WirelessHART™ Technology
Introduction to HART – Highway Addressable Remote Transducer Communication Protocol