@misc{indiciae91a267105ee7,
  title = {Voids in the Ly-alpha forest},
  author = {Duncan, Robert C. and Ostriker, Jeremiah P. and Bajtlik, Stanislaw},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19900023703},
  note = {Source identifier: 19900023703}
}