1. [1] Ballmer, S.: Worldwide Partner Conference 2013 Keynote, available from <http://www.microsoft.com/en-us/news/speeches/2013/07-08wpcballmer.aspx> (accessed 2016-01-15).
2. [2] Google: Data Centers, available from <http://www.google.com/about/datacenters/inside/index.html> (accessed 2016-01-15).
3. [3] Takano, C., Masaki, A., Murata, M. and Imase, M.: Proposal for Autonomous Decentralized Structure Formation Based on Local Interaction and Back-Diffusion Potential, IEICE Trans. Communications (Special Section on Frontiers of Information Network Science), Vol.E95-B, No.5, pp.1529-1538 (2012).
4. [4] Jiang, J.W., Lan, T., Ha, S., Chen, M. and Chiang, M.: Joint VM Placement and Routing for Data Center Traffic Engineering, Proc. IEEE INFOCOM 2012, pp.2876-2880 (2012).
5. [5] Chen, M., Liew, S.C., Shao, Z. and Kai, C.: Markov Approximation for Combinatorial Network Optimization, Proc. IEEE INFOCOM 2010, pp.1-9, IEEE (2010).