@article{oai:muroran-it.repo.nii.ac.jp:00007285,
 author = {YOSHIDA, Masao and 吉田, 正夫},
 issue = {1},
 journal = {室蘭工業大学研究報告, Memoirs of the Muroran University of Engineering},
 month = {Dec},
 note = {application/pdf},
 pages = {221--225},
 title = {On Numerical Differentiation},
 volume = {2},
 year = {1955},
 yomi = {ヨシダ, マサオ}
}