@article{oai:tsukuba.repo.nii.ac.jp:00007504,
 author = {Hirai, H. and 平井, 寿子 and Uchihara, Y. and Fujihisa, H. and Sakashita, M. and Katoh, E. and Aoki, K. and Nagashima, K. and Yamamoto, Y. and Yagi, T.},
 issue = {15},
 journal = {The journal of chemical physics},
 month = {Oct},
 pages = {7066--7070},
 title = {High-pressure structures of methane hydrate observed up to 8 GPa at room temperature},
 volume = {115},
 year = {2001}
}