@misc{indiciae180a2cbf6386,
  title = {Spherical rocket motors for space and upper stage propulsion.},
  author = {Andrews, W. G. and Dougherty, L. S. and Reed, D. R.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680063264},
  note = {Source identifier: 19680063264}
}