Hock Kin, Tan, Norhana Arsad, Mohd Hadri Hafiz Mokhtar, Mohd Saiful Dzulkefly Zan, Nur Hidayah Azeman, and Ahmad Ashrif A Bakar. “Development of Internet of Things Optical Sensor Based on Surface Plasmon Resonance Phase Interferometry”. International Journal of Engineering & Technology 8, no. 1.2 (January 30, 2019): 220–225. Accessed May 5, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/24906.