@article{oai:kochi.repo.nii.ac.jp:00005758,
 author = {Yoji, Koyama},
 journal = {高知論叢. 社会科学},
 month = {Mar},
 note = {application/pdf},
 pages = {53--75},
 title = {EU Accession of Bulgaria and Romania},
 volume = {88},
 year = {2007}
}