@misc{indiciae751b3425e0b1,
  title = {Diffuse X-ray emission from the Dumbbell Nebula?},
  author = {Chu, You-Hua and Kwitter, Karen B. and Kaler, James B.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19930066924},
  note = {Source identifier: 19930066924}
}