Sheng Zuo, Yu Zhang, Daniel G. Doñoro, Xunwang Zhao, and Qifeng Liu. “A Novel Finite Element Mesh Truncation Technology Accelerated by Parallel Multilevel Fast Multipole Algorithm and Its Applications”. Applied Computational Electromagnetics Society Journal (ACES), vol. 34, no. 11, Nov. 2019, pp. 1671-8, https://journals.riverpublishers.com/index.php/ACES/article/view/8105.