Pan, Li-Gang; Lu, Qiang: 'Electromagnetic signal source seeking of multiple robots using an event-triggered communication scheme', Electronics Letters, 2018, 54, (23), p. 1353-1355, DOI: 10.1049/el.2018.5238 IET Digital Library, https://digital-library.theiet.org/;jsessionid=72agbom8t0c7j.x-iet-live-01content/journals/10.1049/el.2018.5238