@misc{indiciae13373e6a2652,
  title = {Russian eruption warning systems for aviation},
  author = {Christina A. Neal and Olga Girina and Sergey Senyukov and Alexander Rybin and Jeffery M. Osiensky and Pavel Izbekov and Gail Ferguson},
  year = {2009},
  doi = {10.1007/s11069-009-9347-6},
  url = {https://pubs.usgs.gov/publication/70035766},
  note = {Source identifier: 70035766}
}