V5-SHEN-11.mp4 Yijie Shen 10.6084/m9.figshare.7323884.v1 https://opticapublishing.figshare.com/articles/media/V5-SHEN-11_mp4/7323884 video illustration of SHEN spheres for (n, m) = (1,1) 2019-03-13 14:26:27 Physical Optics