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Sperber, W.; Schöneberg, U.: Machine-learning methods for classification and content authority control in mathematics (2015)
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Gardner, M.: Is mathematics "out there"? (2001)
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Martínez-Ávila, D.: Classification & authority control : expanding resource discovery (2016)
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Barthel, S.; Tönnies, S.; Balke, W.-T.: Large-scale experiments for mathematical document classification (2013)
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Robbio, A. de; Maguolo, D.; Marini, A.: Scientific and general subject classifications in the digital world (2001)
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