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- Sloof, W.G. (author), Li, S. (author), Song, G. (author), Kwakernaak, C. (author), Wu, X. (author), Van der Zwaag, S. (author) conference paper 2011
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- Song, G.M. (author), Li, S.B. (author), Sloof, W.G. (author), Van der Zwaag, S. (author) conference paper 2011