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Fricke, M.: Information across heterogeneous media (1996)
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- International forum on information and documentation. 21(1996) no.3, S.3-9
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Fricke, M.: Information using likeness measures (1997)
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- Journal of the American Society for Information Science. 48(1997) no.10, S.882-892
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Fricke, M.: Measuring recall (1998)
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- Journal of information science. 24(1998) no.6, S.409-417