@misc{indiciae64d8178bea1e,
  title = {Polar Cap Area and Boundary Motion During Substorms},
  author = {Brittnacher, M. and Germany, G. A. and Fillingim, M. O. and Parks, G. K. and Spann, James F., Jr.},
  year = {1998},
  url = {https://ntrs.nasa.gov/citations/19990078591},
  note = {Source identifier: 19990078591}
}