K. Unger
发表
P. Koidl,
W. Fahrner,
E. Kaulfersch,
1998,
IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200).
Wolfgang Staiger,
Dietmar Müller,
Heinrich Baumann,
2001,
IEEE Trans. Ind. Electron..