Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) S. Ueno and K. Harada and Y. Sonoda,Polyphase converters by flux reversal: New polyphase signal generators,IEEE Transactions on Magnetics,0018-9464,Institute of Electrical and Electronics Engineers (IEEE),1971-09-01,7,,577-581,https://cir.nii.ac.jp/crid/1870302167573762304,https://doi.org/10.1109/tmag.1971.1067118