1. Nakata, T.; Hirai, K.; Takaoki, T. Study of natural gas hydrate (NGH) carriers. Proceedings of the 6th International Conference on Gas Hydrates: Vancouver; British Columbia, Canada, 2008.
2. Nakai, S. Development of Natural Gas Hydrate (NGH) Supply Chain, Presented in Gastech 2011, Amsterdam, 2011.
3. Ota, S.; Uetani, H.; Kawano, H. Use of methane hydrate pellets for transportation of natural gas-III-safety measures and conceptual design of natural gas hydrate pellet carrier. Proceedings of the 4th International Conference on Gas Hydrates, Yokohama, Japan, May 19–23, 2002.