@misc{indiciaeccd3bf7c2e77,
  title = {Multifractality in human heartbeat dynamics},
  author = {Ivanov, P. C. and Amaral, L. A. and Goldberger, A. L. and Havlin, S. and Rosenblum, M. G. and Struzik, Z. R. and Stanley, H. E.},
  year = {1999},
  url = {https://ntrs.nasa.gov/citations/20040141932},
  note = {Source identifier: 20040141932}
}