Norul Hidayah Kadir, Adi Maimun Abdul Malik, and Arifah Ali. “Experimental of Ballast Free System With Air-Injected Pressure Bubbles in Reducing Ship Resistance”. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 90, no. 2 (January 8, 2022): 160–175. Accessed May 8, 2024. https://semarakilmu.com.my/journals/index.php/fluid_mechanics_thermal_sciences/article/view/256.