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- Reeve, H.P. (author), Bea, R.G. (author) report 1998
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- Bea, R.G. (author) report 1997
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- Bea, R.G. (author) report 1997
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- Bea, R.G. (author), Ma, Kai-Thung (author) report 1997
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- Bea, R.G. (author), Xu, Tao (author) report 1997
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- Bea, R.G. (author), Schulte-Strathaus, R. (author) report 1997
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- Dry, N.J. (author), Schulte-Strathaus, R. (author), Bea, R.G. (author) report 1996
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- Schulte-Strathaus, R. (author), Bea, R.G. (author) report 1995
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- Cramer, E.H. (author), Bea, R.G. (author) report 1995
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- Bea, R.G. (author) report 1995
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- Bea, R.G. (author) report 1994
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- Bea, R.G. (author), Hutchison, S.C. (author) report 1993
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- Bea, Robert G. (author) report 1992