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References
Radicchi, F., Fortunato, S. & Castellano, C. Proc. Natl Acad. Sci. USA doi:10.1073/pnas.0806977105 (in the press).
Hirsch, J. E. Proc. Natl Acad. Sci. USA 102, 16569–16572 (2005).
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Ball, P. Is physics better than biology?. Nature (2008). https://doi.org/10.1038/news.2008.1169
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DOI: https://doi.org/10.1038/news.2008.1169