Tuley, Michael T.: 'Radar Fundamentals' (Radar, Sonar and Navigation, 2004), 'Radar Cross Section', 2nd ed., Chap. 2, pp. 23-62, DOI: 10.1049/SBRA026E_ch2
IET Digital Library, https://digital-library.theiet.org/;jsessionid=3i2oa6jc4dr20.x-iet-live-01content/books/10.1049/sbra026e_ch2