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Peitgen, H.-O.; Jürgens, H.; Saupe, D.: Chaos and fractals : new frontiers of science (1992)
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Langville, A.N.; Meyer, C.D.: Google's PageRank and beyond : the science of search engine rankings (2006)
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Martínez-Ávila, D.: Classification & authority control : expanding resource discovery (2016)
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Fraser, C.: Mathematics in library and review classification systems : an historical overview (2020)
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