@misc{indiciaec2bab2985297,
  title = {Helios Prototype Vehicle Mishap: Technical Findings, Recommendations, and Lessons Learned},
  author = {DelFrate, John H.},
  year = {2008},
  url = {https://ntrs.nasa.gov/citations/20080041594},
  note = {Source identifier: 20080041594}
}