@article{oai:sist.repo.nii.ac.jp:00000253,
 journal = {静岡理工科大学紀要, The Bulletin of the Shizuoka Institute of Science and Technology},
 month = {Aug},
 pages = {5--13},
 title = {英単語難易度算出のための各種コーパス間の単語頻度・単語頻度順位の比較の研究},
 volume = {27},
 year = {2019}
}