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Lai, K.-K.; Wu, S.-J.: Using the patent co-citation approach to establish a new patent classification system (2005)
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Haider, J.: ¬The structuring of information through search : sorting waste with Google (2016)
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Moed, H.F.; Leeuwen, T.N. van; Reedijk, J.: ¬A new classification system to describe the ageing of scientific journals and their impact factors (1998)
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Jiang, X.; Zhu, X.; Chen, J.: Main path analysis on cyclic citation networks (2020)
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Stock, M.; Stock, W.G.: Intellectual property information : A comparative analysis of main information providers (2006)
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