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- Visch, G.L. (author), Keuning, J.A. (author) report 2011
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- Keuning, J.A. (author), Sterk, F. (author), Poot, C.P. (author), Visch, Guido L. (author) report 2010
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- Keuning, J.A. (author), Kapsenberg, G.K. (author) report