'Appendix IV: Using decibels' (Radar, Sonar and Navigation, 1999), 'Understanding Radar Systems', Chap. appendix4, pp. 335-336, DOI: 10.1049/SBRA034E_appendix4
IET Digital Library, https://digital-library.theiet.org/;jsessionid=9fcs9ppboj2e8.x-iet-live-01content/books/10.1049/sbra034e_appendix4