@misc{indiciae43092672b740,
  title = {ASTEC and MODEL: Controls software development at Goddard Space Flight Center},
  author = {Downing, John P. and Bauer, Frank H. and Surber, Jeffrey L.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19940010155},
  note = {Source identifier: 19940010155}
}