Fan, Z. H., Y. L. Hu, D. Z. Ding, and R. S. Chen. “A VSIE Solution for EM Scattering Using the Multilevel Complex Source Beam Method”. The Applied Computational Electromagnetics Society Journal (ACES) 30, no. 11 (August 22, 2021): 1146–1153. Accessed May 21, 2024. https://journals.riverpublishers.com/index.php/ACES/article/view/10323.