FitzGerald, J., Dennis, A., & Durcikova, A. (2015a). Business data communications and networking (Twelfth edition). Wiley. http://catalogimages.wiley.com/images/db/jimages/9781118891681.jpg
FitzGerald, J., Dennis, A., & Durcikova, A. (2015b). Business data communications and networking (Twelfth edition). Wiley.
Perlman, R. (1985). An algorithm for distributed computation of a spanningtree in an extended LAN. Proceedings of the Ninth Symposium on Data Communications  - SIGCOMM ’85, 44–53. https://doi.org/10.1145/319056.319004
Shay, W. A. (2004). Understanding data communications and networks (3rd ed). Thomson Brooks/Cole.