Ogbonnaya, E. A., R. Poku, and E. Adigio. “Effects of Greenshipping to the Maritime Industry”. Engineering, Technology & Applied Science Research 3, no. 2 (April 7, 2013): 402–407. Accessed March 7, 2026. https://www.etasr.com/index.php/ETASR/article/view/280.