@misc{indiciae21d3b7c3c958,
  title = {The Cusp: Open Questions},
  author = {Sibeck, D. G. and Omidi, N. and Korotova, G. and Angelopoulos, V.},
  year = {2007},
  url = {https://ntrs.nasa.gov/citations/20080039348},
  note = {Source identifier: 20080039348}
}