@article{oai:tsukuba.repo.nii.ac.jp:00015999,
 author = {Uchiyama, Saburo},
 issue = {1},
 journal = {Tsukuba Journal of Mathematics},
 month = {Jun},
 pages = {1--7},
 title = {On rational approximations to irrational numbers},
 volume = {4},
 year = {1980}
}