'Antenna Measurements' (Electromagnetic Waves, 2009), 'Antennas: Fundamentals, design, measurement', Chap. 9, pp. 371-421, DOI: 10.1049/SBEW040E_ch9
IET Digital Library, https://digital-library.theiet.org/;jsessionid=1un7orldhu9cj.x-iet-live-01content/books/10.1049/sbew040e_ch9