@misc{indiciae543e9324629d,
  title = {Physical characteristics of interplanetary space},
  author = {S. N. Vernov and Yu I.Logachev and N. F. Pisarenko},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19760019713},
  note = {Source identifier: 19760019713}
}