@article{oai:repository.dl.itc.u-tokyo.ac.jp:00024929,
 author = {堀田, 正之},
 issue = {3},
 journal = {生産研究},
 month = {Mar},
 note = {application/pdf},
 pages = {85--85},
 title = {トピツク : 新型永久磁石},
 volume = {2},
 year = {1950}
}