@misc{indiciae676339076c20,
  title = {Multipurpose interactive NASA information system},
  author = {Hill, J. M. and Keefer, R. L. and Sanders, D. R. and Seitz, R. N.},
  year = {1979},
  url = {https://ntrs.nasa.gov/citations/19790000292},
  note = {Source identifier: 19790000292}
}