Sihvola, Ari, Ismo V. Lindell, Henrik Wallén, and Pasi Ylä- Oijala. “Material Realizations of Perfect Electric Conductor Objects”. Applied Computational Electromagnetics Society Journal (ACES) 25, no. 12 (June 17, 2022): 1007–1016. Accessed May 13, 2026. https://journals.riverpublishers.com/index.php/ACES/article/view/15829.