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Dominich, S.: Mathematical foundations of information retrieval (2001)
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Stathopoulos, Y.; Baker, S.; Rei, M.; Teufel, S.: Variable typing : assigning meaning to variables in mathematical text (2018)
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Dyson, M.; Box, H.; Twyman, M.: ¬The perception of symbols on screen and methods of retrieval from a database (1994)
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Tahani, V.: ¬A general conceptual framework for information retrieval systems (1972)
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Manning, C.D.; Schütze, H.: Foundations of statistical natural language processing (2000)
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