'AGC design and PLL comparison' (Telecommunications, 2017), 'Transceiver and System Design for Digital Communications, 5th Edition', Chap. 4, pp. 129-154, DOI: 10.1049/PBTE080E_ch4
IET Digital Library, https://digital-library.theiet.org/;jsessionid=1paz0eeams67b.x-iet-live-01content/books/10.1049/pbte080e_ch4