Xie, J.-J.; Yin, Y.-Z.; Chen, Y.: 'Wideband printed slot antenna with polarisation diversity', Electronics Letters, 2013, 49, (12), p. 737-739, DOI: 10.1049/el.2013.0240
IET Digital Library, https://digital-library.theiet.org/;jsessionid=20d39v0775uw8.x-iet-live-01content/journals/10.1049/el.2013.0240