@article{oai:tsukuba.repo.nii.ac.jp:00049614,
 author = {臼山, 利信 and USUYAMA, Toshinobu},
 journal = {外国語教育論集, Studies in foreign language education},
 month = {Mar},
 pages = {iii--iv},
 title = {<巻頭エッセイ>三点観測とハムスターの回転車},
 volume = {41},
 year = {2019},
 yomi = {ウスヤマ, トシノブ}
}