Kurtela, Željko, and Pavao Komadina. “Harmfulness Evaluation Method for On-Board Water Ballast Management”. Promet - Traffic&Transportation 21, no. 1 (January 25, 2009): 7–14. Accessed August 26, 2025. https://traffic2.fpz.hr/index.php/PROMTT/article/view/1486.