Wahid, M., M. Ahmad, M. Md.Zain, S. Saad, M. Hussein, and Z. Ahmad. “A Preliminary Study on Colour Recognizer for Visually Disabled People”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 10, no. 1-15, May 2018, pp. 139-42, https://jtec.utem.edu.my/jtec/article/view/4061.