Rosli, Nurul Asniena, Karthigesu Nagarajoo, and Beant Singh Devinder Singh. 2022. “Simulation of N+2 Logic for Amplifier in Railway Public Address System”. Progress in Engineering Application and Technology 3 (2): 841–848. https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/8075.