References
M. Lawson, N. Kemp, M. F. Lynch, G. G. Chowdhury, Automatic extraction of citations from the text of English-language patents—an example of tenplate mining,Journal of Information Science, 22 (1996) 423–436.
F. Narin, D. Olivastro, Patent citation cycles,Library Trends, 41 (1993) 700–709.
F. Narin, Patent bibliometrics,Scientometrics, 30 (1994) 147–155.
P. Vinkler, The origin and features of inrormation referenced in pharmaceutical patents,Scientometrics, 30 (1994) 283–302.
P. Ellis et al., Studies on patent citation networks,Journal of Documentation, 34 (1978) 12–20.
H. M. Nunn, C. Oppenheim, A patent-journal citation network on prostaglandins,World Patent Information, 2 (1980) 57–60.
L. Dunlop, C. Oppenheim, Effect of recycling on a patent citation network,World Patent Information, 2 (1980) 100–102.
C. Oppenheim, Studies on patent citation networks, BLR&DD Report 5517 (1979).
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Oppenheim, C. Patent citation analysis. Scientometrics 39, 141 (1997). https://doi.org/10.1007/BF02457435
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DOI: https://doi.org/10.1007/BF02457435