@article{oai:shumei-u.repo.nii.ac.jp:00000014,
 author = {西村, 治 and NISHIMURA, Osamu},
 journal = {秀明大学紀要, Shumei Journal},
 month = {Mar},
 note = {PDF},
 pages = {39--56},
 title = {球面のホモトピー群の合成構造について},
 volume = {16},
 year = {2019},
 yomi = {ニシムラ, オサム}
}