Ahmad, Fauzia; Amin, Moeness G.: 'Radar imaging of building interiors' (Radar, Sonar and Navigation, 2017), 'Novel Radar Techniques and Applications Volume 1: Real Aperture Array Radar, Imaging Radar, and Passive and Multistatic Radar', Chap. 14, pp. 621-659, DOI: 10.1049/SBRA512F_ch14
IET Digital Library, https://digital-library.theiet.org/;jsessionid=24nq3pkjgs70f.x-iet-live-01content/books/10.1049/sbra512f_ch14