Ialongo, I., J. Hakkarainen, R. Kivi, P. Anttila,
N. Krotkov,
K. Yang,
C. Li, S. Tukiainen, S. Hassinen, and J. Tamminen (2015), Validation of satellite SO2 observations in northern Finland during the Icelandic Holuhraun fissure eruption,
Atmos. Meas. Tech., 8, 599-621, doi:10.5194/amtd-8-599-2015.