@article{oai:kwansei.repo.nii.ac.jp:00026469,
 author = {井頭, 均 and Igashira, Hitoshi},
 issue = {9-2},
 journal = {教育学論究},
 month = {Dec},
 pages = {65--72},
 title = {振り子運動の振れ幅と周期の関係},
 year = {2017}
}