@article{oai:seijo.repo.nii.ac.jp:00002953,
 author = {有井, 治},
 issue = {28},
 journal = {成城大學經濟研究},
 month = {Mar},
 note = {P(論文)},
 pages = {153--174},
 title = {独占と競争について(一)},
 year = {1969}
}