@misc{indiciaea8be20032fc1,
  title = {Spectral evolution of multiply impulsive solar bursts},
  author = {Karpen, J. T. and Crannell, C. J. and Frost, K. J.},
  year = {1979},
  url = {https://ntrs.nasa.gov/citations/19800054269},
  note = {Source identifier: 19800054269}
}