@misc{indiciae263eab8720a3,
  title = {Current and Future Impact Risks from Small Debris to Operational Satellites},
  author = {Liou, Jer-Chyi and Kessler, Don},
  year = {2011},
  url = {https://ntrs.nasa.gov/citations/20120012954},
  note = {Source identifier: 20120012954}
}