Cui, Xuewu; Yang, Feng; Gao, Min: 'Wideband CP magnetoelectric dipole antenna with microstrip line aperture-coupled excitation', Electronics Letters, 2018, 54, (14), p. 863-864, DOI: 10.1049/el.2018.1046
IET Digital Library, https://digital-library.theiet.org/;jsessionid=270mufveea62d.x-iet-live-01content/journals/10.1049/el.2018.1046