Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Umida Hidetoshi,The Basic Theory and the System Configuration of Vector Control for Induction Machine. III. The System Configuration of Speed Sensorless Vector Control.,IEEJ Transactions on Industry Applications,09136339,The Institute of Electrical Engineers of Japan,1997,117,5,541-543,https://cir.nii.ac.jp/crid/1390282679632757504,https://doi.org/10.1541/ieejias.117.541