@misc{indiciaed3eaf86da6ed,
  title = {The NASA-OAST earth-to-orbit propulsion technology program - The action plan},
  author = {Escher, W. J. D. and Moses, J. L. and Liang, A. D. and Stephenson, F. W.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19920055973},
  note = {Source identifier: 19920055973}
}