@article{oai:soar-ir.repo.nii.ac.jp:00012252,
 author = {KISHIMOTO,  KAZUO and MOTOSE,  KAORU},
 issue = {2},
 journal = {信州大学理学部紀要},
 month = {Mar},
 note = {Article, 信州大学理学部紀要 5(2): 107-108(1971)},
 pages = {107--108},
 title = {A Covering Theorem for Simple Rings},
 volume = {5},
 year = {1971}
}