@misc{indiciae8c2dc3f5631f,
  title = {Sphere quadtrees - A new data structure to support the visualization of spherically distributed data},
  author = {Fekete, Gyorgy and Treinish, Lloyd},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910060216},
  note = {Source identifier: 19910060216}
}