@misc{oai:repository.dl.itc.u-tokyo.ac.jp:00011234,
 author = {山中, 平四郎},
 month = {},
 note = {種別:卒業論文, 改姓：手塚平四郎},
 title = {Comparison of Induction Motor and Direct Current Motor for Traction Service},
 year = {1901}
}