Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TZENG Yeou-kuang,Optimal Design of the Electromagnetic Levitation with Permanent and Electro Magnets,IEEE/ASME Transactions on Mechatronic,,,1994,30,6,251-258,https://cir.nii.ac.jp/crid/1570572701018263680,