Borcoci, Eugen: 'Survey on software-defined networking and network functions virtualisation in 5G emerging mobile computing' (Telecommunications, 2017), 'Cloud and Fog Computing in 5G Mobile Networks: Emerging advances and applications', Chap. 5, pp. 125-170, DOI: 10.1049/PBTE070E_ch5
IET Digital Library, https://digital-library.theiet.org/;jsessionid=14pivveuro0qn.x-iet-live-01content/books/10.1049/pbte070e_ch5