@misc{indiciae9477cd0dc040,
  title = {The heart works against gravity},
  author = {Seymour, R. S. and Hargens, A. R. and Pedley, T. J.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/20050000423},
  note = {Source identifier: 20050000423}
}