Niu, Kaikun; Huang, Zhixiang; Wu, Bo; Wu, Xianliang: '3D optimised hybrid implicit–explicit FDTD method with suppressed numerical dispersion', Electronics Letters, 2018, 54, (6), p. 335-336, DOI: 10.1049/el.2017.4539
IET Digital Library, https://digital-library.theiet.org/;jsessionid=3265o831op4jd.x-iet-live-01content/journals/10.1049/el.2017.4539