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Burke, Eleanor J.; Perry, Richard H.J.; Brown, Simon J. (2010). "An extreme value analysis of UK drought and projections of change in the future". Journal of Hydrology. 388 (1–2): 131–143. Bibcode:2010JHyd..388..131B. doi:10.1016/j.jhydrol.2010.04.035.
Kourbatov, A. (2013). "Maximal gaps between prime k-tuples: a statistical approach". Journal of Integer Sequences. 16. arXiv:1301.2242. Bibcode:2013arXiv1301.2242K. Article 13.5.2.