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Endres-Niggemeyer, B.: Content analysis : a special case of text compression (1989)
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- Information, knowledge, evolution. Proceedings of the 44th FID Congress, Helsinki, 28.8.-1.9.1988. Ed. by S. Koshiala and R. Launo
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Palais, E.S.: Abstracting for reference librarians (1988)
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- Reference librarian. 1988, no.22, S.297-308