1. (1) シェル(Shell)のホームページ: First carbon neutral LNG cargo delivered in Europe, https://www.shell.com/business-customers/trading-and-supply/trading/news-and-media-releases/first-carbon-neutral-lng-cargo-delivered-in-europe.html, 2024.3.8.
2. (2) International Group of Liquified Natural Gas Importers: Global LNG Trade Market Trends, https://giignl.org/knowledge-center, 2024.3.8.
3. (3) Vivoda, V.: LNG import diversification and energy security in Asia, Energy Policy, Vol.129, pp. 967-974, 2019.
4. (4) Stopford, M.: Maritime Economics – Shipping company economics，Routledge，pp. 221-223, 2008.
5. (5) Beenstock, M. and Vergottis, A.: An econometric model of the world tanker market, Journal of Transport, Vol.23, No.3, pp. 2 1989.