@article{oai:soar-ir.repo.nii.ac.jp:00012134,
 author = {YOKOTA,  ICHIRO},
 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 20(1): 13-13(1985)},
 pages = {13--13},
 title = {Non-symmetry of the Freudenthal's magic square},
 volume = {20},
 year = {1985}
}