Koumaras, H.; Gardikis, G.; Sakkas, Ch; Xilouris, G.; Koumaras, V.; Kourtis, M. A.: 'NFV-based scenarios for satellite–terrestrial integration' (Telecommunications, 2018), 'Satellite Communications in the 5G Era', Chap. 4, pp. 103-123, DOI: 10.1049/PBTE079E_ch4
IET Digital Library, https://digital-library.theiet.org/;jsessionid=1ytkz69ja4xf.x-iet-live-01content/books/10.1049/pbte079e_ch4