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- Sotberg, Torbjørn (author) conference paper 1991
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- Sotberg, Torbjørn (author) conference paper 1991
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- Sotberg, Torbjørn (author) conference paper 1990
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- Sotberg, Torbjørn (author) conference paper 1989
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- Sotberg, Torbjørn (author) conference paper 1988
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