Kord, A. M. ., and I. A. . Eshrah. “The Error Cross-Section Method for Quantifying the Error in Electromagnetic Scattering Problems”. Applied Computational Electromagnetics Society Journal (ACES), vol. 29, no. 04, Sept. 2021, pp. 272-8, https://journals.riverpublishers.com/index.php/ACES/article/view/11027.