TY JOUR TI Signs of anomalous behavior of the ionosphere in 2003–2014 at F1-layer heights over Irkutsk KW electron density KW winter increase in Ne KW geomagnetic activity JO Solar-Terrestrial Physics AU Kushnarenko, G.P. AU Yakovleva, O.E. AU Kuznetsova, G.M. PY 2021 IS 7 PB INFRA-M Academic Publishing LLC.