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Zeng, L.: Automatic indexing for Chinese text : problems and progress (1992)
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Silvester, J.P.: Computer supported indexing : a history and evaluation of NASA's MAI system (1998)
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Salton, G.: Future prospects for text-based information retrieval (1990)
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Wellisch, H.H.: ¬The art of indexing and some fallacies of its automation (1992)
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Smart, G.: Using language analysis to manage information (1993)
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