@article{oai:soar-ir.repo.nii.ac.jp:00012238,
 author = {KISHIMOTO,  KAZUO},
 issue = {1},
 journal = {信州大学理学部紀要},
 month = {Oct},
 note = {Article, 信州大学理学部紀要 7(1): 7-12(1972)},
 pages = {7--12},
 title = {Note on Quadratic Extensions of Rings II},
 volume = {7},
 year = {1972}
}