Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) YAMAGUTI M. and TUTIYA T. and NAITO M.,Study on Three Phases Shunt Connection Commutatorless Motor Using Graetz Connection Type Frequency Converter,The Journal of the Institute of Electrical Engineers of Japan,0020-2878,The Institute of Electrical Engineers of Japan,1968,88,953,327-334,https://cir.nii.ac.jp/crid/1390282680120962432,https://doi.org/10.11526/ieejjournal1888.88.327