@article{oai:niigata-u.repo.nii.ac.jp:00002097,
 author = {Takeuchi, Teruo},
 issue = {4},
 journal = {Journal of the Mathematical Society of Japan, Journal of the Mathematical Society of Japan},
 month = {},
 pages = {539--542},
 title = {A note on I-parts of ray class groups},
 volume = {39},
 year = {1987}
}