@misc{indiciae124669c66079,
  title = {Touchdown system for a Europa Lander concept},
  author = {Greco, Martin E. and Cook, Brant T. and Sell, Steven W.},
  year = {2017},
  url = {https://ntrs.nasa.gov/citations/20210008111},
  note = {Source identifier: 20210008111}
}