1. Lee, T., Huffaker, B., Fomenkov, M., et al.: On the problem of optimization of DNS root servers' placement (2003).
2. Liston, R., Srinivasan, S., Zegura, E.: Diversity in DNS performance measures. In: Proceedings of the 2nd ACM SIGCOMM Workshop on Internet measurment. p.19–31. IMW '02, ACM, New York, NY, USA (2002).
3. K. Frazer. (1995) NSFNET: A partnership for high-speed networking. [Online]. Available: http: /www. merit. edu/merit/archive/nsfnet/final. report.
4. K. Thompson, G. Miller, and R. Wilder, Wide-area traffic pattterns and characteristics, IEEE Network, vol. 11, p.10–23, Nov. /Dec. (1997).
5. L. Breslau, P. Cao, L. Fan, G. Phillips, and S. Shenker, On the implications of Zipf's law for web caching, University of Wisconsin, Madison, Tech. Rep. CS-TR-1998-1371, Apr. (1998).