@article{oai:soar-ir.repo.nii.ac.jp:00012197, author = {SAITO, SHIROSHI}, 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 11(2): 47-52(1977)}, pages = {47--52}, title = {Note on A'n-maps}, volume = {11}, year = {1977} }