@misc{indiciae789973faf32e,
  title = {Interplanetary sector structure, 1962 - 1966},
  author = {Ness, N. F. and Wilcox, J. M.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670022989},
  note = {Source identifier: 19670022989}
}