@article{oai:repository.dl.itc.u-tokyo.ac.jp:00024269,
 author = {坪井, 善勝 and 秋野, 金次},
 issue = {12},
 journal = {生産研究},
 month = {Dec},
 note = {application/pdf},
 pages = {295--295},
 title = {研究速報 : 変断面球殼の解},
 volume = {5},
 year = {1953}
}