@article{oai:chuo-u.repo.nii.ac.jp:00001278,
 author = {相馬, 輝彦},
 journal = {中央大学数学教室講究録},
 month = {Mar},
 note = {application/pdf},
 title = {双曲幾何学入門},
 volume = {5},
 year = {2011},
 yomi = {ソウマ, テルヒコ}
}