@misc{indiciaeae5fef993416,
  title = {Dust activity of Comet Halley's nucleus},
  author = {Keller, H. U. and Delamere, W. A. and Huebner, W. F. and Reitsema, H. and Schmidt, H. U. and Schmidt, W. K. H. and Whipple, Fred L. and Wilhelm, K.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19870016534},
  note = {Source identifier: 19870016534}
}