'Antennas' (Radar, Sonar and Navigation, 2004), 'Radar Principles for the Non-Specialist', Chap. 2, pp. 15-46, DOI: 10.1049/SBRA032E_ch2
IET Digital Library, https://digital-library.theiet.org/;jsessionid=1hnmv9pplaj8d.x-iet-live-01content/books/10.1049/sbra032e_ch2