1. Kim, W.-J. “High-precision planar magnetic levitation.” Ph.D. thesis, Massachusetts Institute of Technology, Cambridge, MA, June 1997
2. Design and analysis framework for linear permanent-magnet machines;Trumper;IEEE Trans Ind Appl,1996
3. Design of permanent multipole magnets with oriented rare earth cobalt material;Halbach;Nucl Instrum Meth,1980
4. Linear-motor-levitated stage for photolithography;Kim;Ann CIRP,1997
5. Holmes, M. L., Hocken, R. J. and Trumper, D. L. “A long-range scanning stage (the LORS project),” Proceedings of 1997 ASPE annual meeting, October 1997