'Transmission networks' (Telecommunications, 2017), 'Understanding Telecommunications Networks, (2nd Edition)', Chap. 5, pp. 107-137, DOI: 10.1049/PBTE071E_ch5
IET Digital Library, https://digital-library.theiet.org/;jsessionid=3cslhw91dp22h.x-iet-live-01content/books/10.1049/pbte071e_ch5