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2. Optimal placement of virtual network functions in software defined networks: a survey;Demirci;J. Netw. Comput. Appl.,2019
3. Internet Engineering Task Force (IETF), RFC 7252 – The Constrained Application Protocol (CoAP). https://tools.ietf.org/html/rfc7252, 2014 (accessed December 11, 2019).
4. Internet Engineering Task Force (IETF), RFC 7390 – Group Communication for CoAP. https://tools.ietf.org/html/rfc7390, 2014 (accessed December 11, 2019).
5. Flexible unicast-based group communication for CoAP-enabled devices;Ishaq;Sensors,2014