Chen, M. ., R. . Chen, Z. . Fan, and D. . Ding. “Accelerating the Multilevel Fast Multipole Method With Parallel Preconditioner for Large-Scale Scattering Problems”. Applied Computational Electromagnetics Society Journal (ACES), vol. 26, no. 10, May 2022, pp. 815-22, https://journals.riverpublishers.com/index.php/ACES/article/view/15459.