Piyanut Saengsikhiao, Juntakan Taweekun, and Chayapat Prapaipornlert, “The Improvement of Energy Efficiency in Refrigeration Systems using Ultrasonic Sensors”, J. Adv. Res. Fluid Mech. Therm. Sc., vol. 119, no. 1, pp. 189–195, Jul. 2024.