Saeed, U. ., and A. F. . Peterson. “Local Residual Error Estimators for the Method of Moments Solution of Electromagnetic Integral Equations”. Applied Computational Electromagnetics Society Journal (ACES), vol. 26, no. 5, May 2022, pp. 403-10, https://journals.riverpublishers.com/index.php/ACES/article/view/15353.