Jiang, Wanyue; Wang, Daobo; Wang, Yin; Ali, Zain Anwar: 'UAV rendezvous based on time-varying vector fields', Electronics Letters, 2017, 53, (10), p. 653-655, DOI: 10.1049/el.2017.0180
IET Digital Library, https://digital-library.theiet.org/;jsessionid=em5iqebncfmja.x-iet-live-01content/journals/10.1049/el.2017.0180