He Z, Fan H, Ding DZ, Chen RS. A Vector Parabolic Equation Method Combined with MLFMM for Scattering from a Cavity. ACES Journal [Internet]. 2021 Aug. 22 [cited 2024 Sep. 18];30(05):496-502. Available from: https://journals.riverpublishers.com/index.php/ACES/article/view/10527