@article{oai:omu.repo.nii.ac.jp:00009122,
 author = {Ishizaki, Takemitsu},
 journal = {Bulletin of University of Osaka Prefecture. Series A, Engineering and natural sciences},
 month = {Mar},
 note = {application/pdf, Bulletin of University of Osaka Prefecture. Series A, Engineering and natural sciences. 1958, 6, p.85-93},
 pages = {85--93},
 title = {Speed Control of D.C. Moter by Ultra Low Frequency signal},
 volume = {6},
 year = {1958}
}