@misc{indiciaeac6b9bc21ebb,
  title = {Interplanetary sector structure at solar maximum.},
  author = {Wilcox, J. M. and Colburn, D. S.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720035495},
  note = {Source identifier: 19720035495}
}