Binke Huang, and Xubing Wang. “A Compact Finite-Difference Frequency-Domain Method for Analysis of Microwave Transmission Lines With Rough Surface”. The Applied Computational Electromagnetics Society Journal (ACES), vol. 34, no. 10, Oct. 2019, pp. 1461-6, https://journals.riverpublishers.com/index.php/ACES/article/view/8143.