@misc{indiciae55e74c4c1ba4,
  title = {Preprototype nitrogen supply subsystem development},
  author = {Heppner, D. B. and Hallick, T. M. and Schubert, F. H.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19820007907},
  note = {Source identifier: 19820007907}
}