Pandey, G.K.; Verma, H.; Meshram, M.K.: 'Compact antipodal Vivaldi antenna for UWB applications', Electronics Letters, 2015, 51, (4), p. 308-310, DOI: 10.1049/el.2014.3540
IET Digital Library, https://digital-library.theiet.org/;jsessionid=1jhvbw531afmn.x-iet-live-01content/journals/10.1049/el.2014.3540