@article{oai:ipsj.ixsq.nii.ac.jp:00008748,
 author = {二宮, 市三 and Ninomiya, Ichizo},
 issue = {1},
 journal = {情報処理},
 month = {Jan},
 title = {平方根の有理関数近似},
 volume = {8},
 year = {1967}
}