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Wilson, C.: ¬A classification scheme for textbooks and curriculum materials (1983)
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Sperber, W.; Schöneberg, U.: Machine-learning methods for classification and content authority control in mathematics (2015)
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Stock, W.G.: Informetrische Untersuchungsmethoden auf der Grundlage der Textwortmethode (1984)
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Fidel, R.; Efthimiadis, E.N.: Terminological knowledge structure for intermediary expert systems (1995)
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Madalli, D.P.; Prassad, A.R.D.: VYASA: a knowledge representation system for automatic maintenance of analytico-synthetic scheme (2003)
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