@misc{indiciae7f96547b3ef0,
  title = {A technique permitting evaluation of cardiovascular changes induced by long-term weightlessness.},
  author = {Popovic, P. and Popovic, V. P.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690063835},
  note = {Source identifier: 19690063835}
}