Zanne, Marina, and Mirjana Grčić. “Challenges of LNG (Liquefied Natural Gas) Carriers in 21’ Century”. Promet - Traffic&Transportation 21, no. 1 (January 25, 2009): 49–60. Accessed August 26, 2025. https://traffic2.fpz.hr/index.php/PROMTT/article/view/1491.