Yan, Lincan, Joseph Waynert, and Carl Sunderman. 2021. “Earth Conductivity Estimation from Through-the-Earth Measurements of 94 Coal Mines Using Different Electromagnetic Models”. Applied Computational Electromagnetics Society Journal (ACES) 29 (10):755-62. https://journals.riverpublishers.com/index.php/ACES/article/view/10867.