@misc{indiciae32391d682436,
  title = {Protostellar collapse in a self-gravitating sheet},
  author = {Hartmann, Lee and Boss, Alan and Calvet, Nuria and Whitney, Barbara},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/19950030905},
  note = {Source identifier: 19950030905}
}