1. URL http://www.caida.org/data/active/as-relationships
2. URL http://deim.urv.cat/~sgomez/radatools.php
3. I. Abraham, C. Gavoille, D. Malkhi, N. Nisan, M. Thorup, Compact name-independent routing with minimum stretch, in Proceedings of the Sixteenth Annual ACM Symposium on Parallelism in Algorithms and Architectures (ACM, 2004), pp. 20–24
4. L. Adamic, R. Lukose, A. Puniyani, B. Huberman, Search in power-law networks. Phys. Rev. E 64(4), 046,135 (2001)
5. A. Arenas, J. Borge-Holthoefer, S. Gómez, G. Zamora-Lopez, Optimal map of the modular structure of complex networks. New J. Phys. 12, 053,009 (2010)