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Bookstein, A.; Klein, S.T.: Compression, information theory, and grammars : a unified approach (1990)
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- ACM transaction on information systems. 8(1990), S.27-49
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Fraenkel, A.S.; Klein, S.T.: Information retrieval from annotated texts (1999)
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- Journal of the American Society for Information Science. 50(1999) no.10, S.845-854
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Bookstein, A.; Klein, S.T.; Raita, T.: Clumping properties of content-bearing words (1998)
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- Journal of the American Society for Information Science. 49(1998) no.2, S.102-114