@article{oai:air.repo.nii.ac.jp:00004114,
 author = {安藤, 英夫 and ANDO, Hideo},
 journal = {秋田大学教育学部研究紀要 自然科学, Memoirs of the Faculty of Education, Akita University. Natural science},
 month = {Feb},
 pages = {1--4},
 title = {Remark on iterated loops},
 volume = {22},
 year = {1972}
}