1. Openflow: enabling innovation in campus networks;McKeown;SIGCOMM Comput. Commun. Rev.,2008
2. Hyperflow: A distributed control plane for openflow;Tootoonchian,2010
3. Onix: A distributed control platform for large-scale production networks;Koponen,2010
4. The controller placement problem;Heller,2012
5. On the capacitated controller placement problem in software defined networks;Yao;IEEE Commun. Lett.,2014