@misc{indiciae9e286b1d9ee2,
  title = {Where have all the cluster halos gone?},
  author = {Burns, Jack O. and Sulkanen, Martin E. and Gisler, Galen R. and Perley, Rick A.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19920050417},
  note = {Source identifier: 19920050417}
}