Boloorian, M.; McGeehan, J.P.: 'Phase-lag compensated twin-loop Cartesian transmitter', Electronics Letters, 1996, 32, (18), p. 1647-1648, DOI: 10.1049/el:19961154
IET Digital Library, https://digital-library.theiet.org/;jsessionid=1rj7lg6el1fzx.x-iet-live-01content/journals/10.1049/el_19961154