He, Z., H. Fan, D. Z. Ding, and R. S. Chen. “A Vector Parabolic Equation Method Combined With MLFMM for Scattering from a Cavity”. Applied Computational Electromagnetics Society Journal (ACES) 30, no. 05 (August 22, 2021): 496–502. Accessed October 19, 2024. https://journals.riverpublishers.com/index.php/ACES/article/view/10527.