'Putting it all together' (Telecommunications, 2017), 'Understanding Telecommunications Networks, (2nd Edition)', Chap. 11, pp. 329-360, DOI: 10.1049/PBTE071E_ch11
IET Digital Library, https://digital-library.theiet.org/;jsessionid=bkgfbn5dgois5.x-iet-live-01content/books/10.1049/pbte071e_ch11