'Design of planar slotted waveguide array antennas' (Electromagnetic Waves, 2018), 'Slotted Waveguide Array Antennas: Theory, analysis and design', Chap. 7, pp. 135-174, DOI: 10.1049/SBEW517E_ch7
IET Digital Library, https://digital-library.theiet.org/;jsessionid=2mk444mj11t88.x-iet-live-01content/books/10.1049/sbew517e_ch7