@article{oai:soar-ir.repo.nii.ac.jp:00017618,
 author = {NAKAMURA,  Masato},
 journal = {信州大学教養部紀要. 第二部, 自然科学},
 month = {Mar},
 note = {Article, 信州大学教養部紀要. 第二部, 自然科学 7: 1-6(1973)},
 pages = {1--6},
 title = {BORDISM AND SEMI-FREE S¹-ACTION},
 volume = {7},
 year = {1973}
}