@misc{indiciae9dbe571f0bc4,
  title = {Positive cloud-to-ground lightning flashes in severe storms},
  author = {Rust, W. D. and Macgorman, D. R. and Arnold, R. T.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19810057008},
  note = {Source identifier: 19810057008}
}