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2. Christopher E. Strangio, “The RS232 Standard - A Tutorial with Signal Names and Definitions,“ 1993-2006.
3. “Universal Serial Bus Specification,” Compaq, Intel, Microsof, NEC, 1998.[4] Robot Bosch Gmbh, “CAN Specification v2.0,” Bosch, 1991.
4. John F. Shoch, “An Introduction to the Ethernet Specification,” ACM SIGCOMM Computer Communication Review Vol.11, pp. 17-19, New York, USA, 1981.
5. ISO TC 184/SC 5, “ISO 156745 - Industrial automation system and integration Part1,” 1999.