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Raposo EP, Buldyrev SV, da Luz MG, Santos MC, Stanley HE, Viswanathan GM.Raposo EP, et al. Among authors: viswanathan gm.Phys Rev Lett. 2003 Dec 12;91(24):240601. doi: 10.1103/PhysRevLett.91.240601. Epub 2003 Dec 12.Phys Rev Lett. 2003.PMID: 14683101