@misc{indiciae6f48509df59b,
  title = {Remediating Non-Positive Definite State Covariances for Collision Probability Estimation},
  author = {Hall, Doyle T. and Hejduk, Matthew D. and Johnson, Lauren C.},
  year = {2017},
  url = {https://ntrs.nasa.gov/citations/20170007917},
  note = {Source identifier: 20170007917}
}