@misc{indiciaeff0eae40c12a,
  title = {A Multipole Expansion Method for Analyzing Lightning Field Changes},
  author = {Koshak, William J. and Krider, E. Philip and Murphy, Martin J.},
  year = {1999},
  url = {https://ntrs.nasa.gov/citations/19990063842},
  note = {Source identifier: 19990063842}
}