F. D. . Sinaga, E. G. Suka, and P. K. Karo, “The Effect of Immersion Time on Corrosion Rate on St37 Carbon Steel in 3% NaCl Corrosive Medium Using Waru Leaves Extract Inhibitor”, J. Energy Mater. Instrum. Technol., vol. 4, no. 3, pp. 99–105, Feb. 2024.