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- Beukelman, W. (author), Keuning, P.J. (author), Huijsmans, R.H.M. (author) report 1983
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- Beukelman, Wim (author) report 1983
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- Beukelman, W. (author), Gerritsma, J. (author) report 1982
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- Beukelman, W. (author), Gerritsma, J. (author) report 1982
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- Beukelman, Wim (author), van Strien, Aad J. (author) report 1982
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- Beukelman, Wim (author), van Strien, Aad J. (author) report 1982
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- Beukelman, Wim (author) report 1980
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- Beukelman, Wim (author) report 1977
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- Beukelman, Wim (author) report 1975
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- Beukelman, Wim (author), Huijser, Art (author) report 1974
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- Beukelman, Wim (author) report 1974
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- Beukelman, Wim (author) report 1973
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- Beukelman, W. (author), Bijlsma, E.F. (author) report 1973
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- Beukelman, Wim (author) report 1972
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- Beukelman, Wim (author), Versluis, Aad (author) report 1971
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- v d Brug, J.B. (author), Beukelman, W. (author), Prins, G.J. (author) report 1971
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- Beukelman, Wim (author) report 1969
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- Beukelman, Wim (author) report 1968
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- Beukelman, Wim (author) report 1968
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- Beukelman, Wim (author) report 1967