1. Software-defined networking: the new norm for networks. In: Open Networking Foundation Whitepaper (2012).
https://www.opennetworking.org/images/stories/downloads/sdn-resources/white-papers/wp-sdn-newnorm.pdf
2. Nunes, B.A.A., Mendonça, M., Nguyen, X.-N., Obraczka, K., Turletti, T.: A survey of software-defined networking: past, present, and future of programmable networks. IEEE Commun. Surv. Tut. 16(3), 1617–1634 (2014)
3. Kreutz, D., Ramos, F.M.V., Veríssimo, P.E., Rothenberg, C.E., Azodolmolky, S., Uhlig, S.: Software-defined networking: a comprehensive survey. Proc. IEEE 103(1), 14–76 (2015)
4. ONF TR-521, SDN Architecture (2016).
https://www.opennetworking.org/images/stories/downloads/sdn-resources/technical-reports/TR-521_SDN_Architecture_issue_1.1.pdf
5. ETSI GS NFV 002 V1.1.1 (2013-10) Network Functions Virtualization (NFV); Architectural Framework.
http://www.etsi.org/deliver/etsi_gs/nfv/001_099/002/01.01.01_60/gs_nfv002v010101p.pdf