@misc{indiciaea1d3172c7732,
  title = {Soviet short-term forecasts of active region evolution and flare activity},
  author = {Severny, A. B. and Stepanyan, N. N. and Steshenko, N. V.},
  year = {1979},
  url = {https://ntrs.nasa.gov/citations/19800010195},
  note = {Source identifier: 19800010195}
}