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Goldberger AL, Amaral LA, Hausdorff JM, Ivanov PCh, Peng CK, Stanley HE.Goldberger AL, et al. Among authors: hausdorff jm.Proc Natl Acad Sci U S A. 2002 Feb 19;99 Suppl 1(Suppl 1):2466-72. doi: 10.1073/pnas.012579499.Proc Natl Acad Sci U S A. 2002.PMID: 11875196Free PMC article.