@article{oai:tsukuba.repo.nii.ac.jp:00007580,
 author = {門脇, 和男 and KADOWAKI, Kazuo and Kakeya, I. and Gaifullin, M. B. and Mochiku, T. and Takahashi, S. and Koyama, T. and Tachiki, M.},
 issue = {9},
 journal = {Physical review B},
 month = {Sep},
 pages = {5617--5621},
 title = {Longitudinal Josephson-plasma excitation in Bi2Sr2CaCu2O8+δ: Direct observation of the Nambu-Goldstone mode in a superconductor},
 volume = {56},
 year = {1997},
 yomi = {カドワキ, カズオ}
}