@article{oai:hokusei.repo.nii.ac.jp:00001112,
 author = {中屋, 晃 and Nakaya, Akira},
 month = {2014-02-18},
 title = {Is Oil Just Another Commodity? : Six Oil Crises and Oil's Boom and Bust Cycles after the 1991 Gulf War},
 year = {}
}