@article{oai:sit.repo.nii.ac.jp:00000433,
 author = {OKANO, Takeshi and Okano, Takeshi},
 issue = {1},
 journal = {Contexture : 教養紀要},
 month = {Mar},
 pages = {11--14},
 title = {On the rational approximations to e},
 year = {1984}
}