Ali, S. M. ., N. K. . Nikolova, and M. H. . Bakr. “Recent Advances in Sensitivity Analysis With Frequency-Domain Full-Wave EM Solvers”. Applied Computational Electromagnetics Society Journal (ACES), vol. 19, no. 3, June 2022, pp. 147-54, https://journals.riverpublishers.com/index.php/ACES/article/view/16691.