@misc{indiciae6efe37de25ef,
  title = {The Viking mortar - Design, development, and flight qualification.},
  author = {Brecht, J. P. and Pleasants, J. E. and Mehring, R. D.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730046642},
  note = {Source identifier: 19730046642}
}