@article{oai:aue.repo.nii.ac.jp:00000658,
 author = {Odani, Kenzi},
 journal = {愛知教育大学研究報告. 自然科学},
 month = {Mar},
 note = {text},
 pages = {1--2},
 title = {A Simple Proof of a Characterization Theorem of the Sphere},
 volume = {57},
 year = {2008}
}