@article{oai:repository.dl.itc.u-tokyo.ac.jp:00021993, author = {木内, 学}, issue = {12}, journal = {生産研究}, month = {Dec}, note = {application/pdf}, pages = {649--657}, title = {ロールフォーミングの製品形状と変形機構}, volume = {21}, year = {1969} }