Mohd H. M. Salleh, Norhudah Seman, and Raimi Dewan. “The Investigation of Substrate’s Dielectric Properties for Improving the Performance of Witricity Devices”. The Applied Computational Electromagnetics Society Journal (ACES), vol. 32, no. 01, Aug. 2021, pp. 24-30, https://journals.riverpublishers.com/index.php/ACES/article/view/9761.