@article{oai:kanazawa-u.repo.nii.ac.jp:00010409,
 author = {児玉, 秋雄 and Kodama, Akio and Shimizu, Satoru},
 issue = {1},
 journal = {Michigan Mathematical Journal},
 month = {Jan},
 note = {金沢大学理工研究域数物科学系},
 pages = {173--181},
 title = {An intrinsic characterization of the unit polydisc},
 volume = {56},
 year = {2008}
}