4) K. Matsuoka, S. Obata, H. Noda and F. Toujou : Development of FDB spindle motors for HDD use, 2000 Asia Pacific Magnetic Recording Conference, (2000) MA1-01.
5) C.P. R. Ku, S. Parsoneault and H. Leuthold : Hydrodynamic motors trim disk drive run out, DATA Storage, 1, (1998) 27.