Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Takakura Shinji,Design of the Tracking System using N-Delay Two-Degree-of-Freedom Control and its Application to Hard Disk Drives,IEEJ Transactions on Industry Applications,09136339,The Institute of Electrical Engineers of Japan,1999,119,5,728-734,https://cir.nii.ac.jp/crid/1390282679635488128,https://doi.org/10.1541/ieejias.119.728