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Ruge, G.; Schwarz, C.: Natural language access to free-text data bases (1989)
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Ruge, G.; Schwarz, C.: Linguistically based term associations : a new semantic component for a hyperterm system (1990)
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Ruge, G.: Experiments on linguistically-based term associations (1992)
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Kousha, K.; Thelwall, M.: Patent citation analysis with Google (2017)
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Larson, R.R.: Cheshire 2 : design and evaluation of a next-generation online catalog system (1995)
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