@article{oai:niigata-u.repo.nii.ac.jp:00028968,
 author = {高野, 道夫},
 issue = {1},
 journal = {数学教育研究, 数学教育研究},
 month = {Apr},
 pages = {1--4},
 title = {分数について乗法・除法と似た性質をもつ演算},
 volume = {45},
 year = {2010}
}