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- Doorduin, J.P. (author), Hengst, S. (author), Stijnen, P. (author) master thesis 1984
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- Kortenhorst, R.W.F. (author), Malotaux, P.Ch.A. (author), Hengst, S. (author) master thesis 1984
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- Broersen, P.M. (author), Hengst, S. (author) master thesis 1984
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- Hengst, S. (author), Kuijer, M.M.R. (author), Saurwa, K.J. (author) lecture notes 1984
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- de Pierre, Oele (author), Lambers, Hille Ris (author), Hengst, S. (author) master thesis 1984
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- Hengst, S. (author) public lecture 1983