OGBONNAYA, E. A.; POKU, R.; ADIGIO, E. Effects of Greenshipping to the Maritime Industry. Engineering, Technology & Applied Science Research, Greece, v. 3, n. 2, p. 402–407, 2013. DOI: 10.48084/etasr.280. Disponível em: https://etasr.com/index.php/ETASR/article/view/280. Acesso em: 29 sep. 2021.