@misc{indiciae827d98e63dbe,
  title = {Thermal conductivity of comets},
  author = {Vachon, R. I. and Kumar, G. N. and Khader, M. S.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19750003733},
  note = {Source identifier: 19750003733}
}