Ahmad, Khairul Azman, Mohamad Faizal Abdul Rahman, and Noramalina Abdullah. 2020. “Characterization of Planar Based Electrode Piezoelectric Micromachined Ultrasonic Transducer for Underwater Sensor Application Using FEA Simulation”. Applications of Modelling and Simulation 4 (September):297-304. https://www.ojs.arqiipubl.com/index.php/AMS_Journal/article/view/194.