Mohd Lokman, A., M. B. Che Haron, S. Z. Zainal Abidin, and N. E. Abd Khalid. “Natphoric Kansei Engineering Systems (N-KES)”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 9, no. 2-3, June 2017, pp. 77-81, https://jtec.utem.edu.my/jtec/article/view/2286.