Wong, K.-L.; Chen, H.-T.: 'Electromagnetic scattering by a uniaxially anisotropic sphere', IEE Proceedings H (Microwaves, Antennas and Propagation), 1992, 139, (4), p. 314-318, DOI: 10.1049/ip-h-2.1992.0056
IET Digital Library, https://digital-library.theiet.org/;jsessionid=q3qwth16wa8v.x-iet-live-01content/journals/10.1049/ip-h-2.1992.0056