Tomasin, Stefano: 'Secure waveforms for 5G systems' (Telecommunications, 2017), 'Trusted Communications with Physical Layer Security for 5G and Beyond', Chap. 14, pp. 337-363, DOI: 10.1049/PBTE076E_ch14
IET Digital Library, https://digital-library.theiet.org/;jsessionid=a5amlg0stkp8g.x-iet-live-01content/books/10.1049/pbte076e_ch14