TY  - RPRT
TI  - Encounters of aircraft with volcanic ash clouds: A compilation of known incidents, 1953-2009
AU  - Marianne Guffanti
AU  - Thomas J. Casadevall
AU  - Karin Budding
PY  - 2010
DO  - 10.3133/ds545
UR  - https://pubs.usgs.gov/publication/ds545
ID  - ds545
ER  -