'Back Matter' (Electromagnetic Waves, 2017), 'Adjoint Sensitivity Analysis of High Frequency Structures with MATLAB®', Chap. bm, pp. -, DOI: 10.1049/SBEW525E_bm
IET Digital Library, https://digital-library.theiet.org/;jsessionid=4t89toka4hmga.x-iet-live-01content/books/10.1049/sbew525e_bm