@misc{indiciae64c572deee0a,
  title = {Circadian rhythms in healthy aging--effects downstream from the pacemaker},
  author = {Monk, T. H. and Kupfer, D. J.},
  year = {2000},
  url = {https://ntrs.nasa.gov/citations/20040141539},
  note = {Source identifier: 20040141539}
}