@misc{indiciaea004cc701771,
  title = {Galactic cosmic ray modulation and interplanetary medium perturbations due to a long-living active region during October 1989},
  author = {Bavassano, B. and Iucci, N. and Lepping, R. P. and Signorini, C. and Smith, E. J. and Villoresi, G.},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/19950037085},
  note = {Source identifier: 19950037085}
}