@misc{indiciae5e28865d226a,
  title = {Current research on regenerative systems.},
  author = {Bell, N. L. and Mandel, A. D. and Quattrone, P. D. and Shapira, J.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690059634},
  note = {Source identifier: 19690059634}
}