%0 Journal Article %T Long-term variations in the neutral gas composition of the termosphere above Irkutsk %A Kushnarenko, G.P. %A Yakovleva, O.E. %A Kuznetsova, G.M. %K ratios of dominant gas components of the thermosphere, geomagnetic disturbances, seasonal variations %J Solnechno-Zemnaya Fizika %D 2015 %N 1 %P 4 %I Institute of Solar-Terrestrial Physics SB RAS