TY JOUR TI Long-term variations in the neutral gas composition of the thermosphere over Norilsk (2003–2013) KW Thermospheric gas components KW Geomagnetic disturbances KW Seasonal variations JO Solar-Terrestrial Physics AU Kushnarenko, G.P. AU Yakovleva, O.E. AU Kuznetsova, G.M. PY 2017 IS 2 PB INFRA-M Academic Publishing LLC.