Faturachman, D., A Djaeni, M. D. Arifin, and . Fridolini. “Fuel Efficiency of Tug Boats Using a Flow Meter Web Based Monitoring and Control System in P.T. X”. Recent Progress in Science and Technology Vol. 3 (January 21, 2023): 91–99. Accessed June 26, 2026. https://stm.bookpi.org/RPST-V3/article/view/9362.