@article{oai:seijo.repo.nii.ac.jp:00002964,
 author = {有井, 治},
 issue = {29},
 journal = {成城大學經濟研究},
 month = {Sep},
 note = {P(論文)},
 pages = {155--174},
 title = {独占と競争について(二)},
 year = {1969}
}