%A Hitotumatu, Shin
%T On a certain rational approximation of arctanh X
%J Commentarii mathematici Universitatis Sancti Pauli
%0 Journal Article
%@ 0010258X
%I Rikkyo University
%D 1967
%8 1967-07-00
%V 16
%N 1
%P 5-9
%U http://ci.nii.ac.jp/naid/110007702534/en/
%R