@article{oai:ncu.repo.nii.ac.jp:00000657,
 author = {山田, 晃久},
 issue = {3-4},
 journal = {オイコノミカ},
 month = {Mar},
 pages = {167--189},
 title = {地下鉄事業における関連事業の必要性と経営改革に向けての考察},
 volume = {42},
 year = {2006}
}