@article{oai:ynu.repo.nii.ac.jp:00008761,
 author = {土井, 日出夫},
 issue = {1・2},
 journal = {エコノミア},
 month = {Mar},
 pages = {57--69},
 title = {転形問題と回転時間},
 volume = {67},
 year = {2017}
}