@Article{acp-11-1979-2011,
AUTHOR = {Usoskin, I. G. and Kovaltsov, G. A. and Mironova, I. A. and Tylka, A. J. and Dietrich, W. F.},
TITLE = {Ionization effect of solar particle GLE events in low and\ middle atmosphere},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {11},
YEAR = {2011},
NUMBER = {5},
PAGES = {1979--1988},
URL = {http://www.atmos-chem-phys.net/11/1979/2011/},
DOI = {10.5194/acp-11-1979-2011}
}