Phaik-Ean, Wong, Nasuha Lee Abdullah, Rosnah Idrus, and Pantea Keikhosrokiani. “Real Time Productivity Monitoring System for Small and Medium Size Manufacturing Industry”. International Journal of Engineering and Technology 7, no. 4.31 (December 9, 2018): 128–134. Accessed August 17, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/23355.