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- Wereldsma, R. (author) conference paper 1981
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- Wereldsma, R. (author) conference paper 1981
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- Wereldsma, R. (author) conference paper 1981
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- Wereldsma, R. (author) conference paper 1981
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- Wereldsma, R. (author) conference paper 1980
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- Wereldsma, R. (author) conference paper 1980
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- Wereldsma, R. (author) conference paper 1975
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- Wereldsma, R. (author) conference paper 1973
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- Wereldsma, R. (author) conference paper 1972