Bin Li, Chao Liu, Hua-ning Wu, and Bo Zhang. 2019. “An Estimation Method for the SLF/ELF Field Strength With L-Type Horizontal Line-Current Antennas over Inhomogeneous Anisotropic Ground”. The Applied Computational Electromagnetics Society Journal (ACES) 34 (08):1158-64. https://journals.riverpublishers.com/index.php/ACES/article/view/8281.