@article{oai:nipr.repo.nii.ac.jp:00014100,
 author = {伊藤, 一},
 issue = {5},
 journal = {学術月報, Japanese scientific monthly},
 month = {May},
 pages = {388--390},
 title = {国際極年沿革},
 volume = {57},
 year = {2004},
 yomi = {イトウ, ハジメ}
}