@article{oai:cuc.repo.nii.ac.jp:00004700,
 author = {青木, 英孝 and アオキ, ヒデタカ and AOKI, Hidetaka},
 issue = {4},
 journal = {千葉商大論叢},
 month = {Mar},
 note = {P(論文)},
 pages = {19--39},
 title = {日本企業における多角化の推移},
 volume = {46},
 year = {2009}
}