Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Koichi Oka and Toshiro Higuchi and Takuya Shiraishi,Hanging Type Mag-lev System with Permanent Magnet Motion Control,IEEJ Transactions on Industry Applications,09136339,The Institute of Electrical Engineers of Japan,1999,119,3,291-297,https://cir.nii.ac.jp/crid/1390282679634261504,https://doi.org/10.1541/ieejias.119.291