'Slot arrays in special waveguide technologies' (Electromagnetic Waves, 2018), 'Slotted Waveguide Array Antennas: Theory, analysis and design', Chap. 10, pp. 291-315, DOI: 10.1049/SBEW517E_ch10
IET Digital Library, https://digital-library.theiet.org/;jsessionid=1gl7ingafqoxk.x-iet-live-01content/books/10.1049/sbew517e_ch10