Z. A, N. F., I. Ahmad, P. Ker, P. Menon, and A. M. A.H. “VTH and ILEAK Optimization Using Taguchi Method at 32nm Bilayer Graphene PMOS”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 9, no. 2-7, Sept. 2017, pp. 105-9, https://jtec.utem.edu.my/jtec/article/view/2601.