@misc{indiciae90a7c391c4b4,
  title = {A spherical harmonics method for asteroid pole determination},
  author = {Lumme, K. and Karttunen, H. and Bowell, E.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900064653},
  note = {Source identifier: 19900064653}
}