Abu Bakar, A., A. Idris, A. R. Razali, and M. A. Zakaria. “Wireless Power Transfer via Inductive Coupling”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 10, no. 1-9, Feb. 2018, pp. 37-41, https://jtec.utem.edu.my/jtec/article/view/3869.