@misc{indiciaec83063feec35,
  title = {Cometary grains},
  author = {Baum, William A. and Kreidl, Tobias J. and Schleicher, David G.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19920071801},
  note = {Source identifier: 19920071801}
}