TY JOUR TI Ionospheric reaction on sudden stratospheric warming events in Russia´s Asia region KW ionospheric disturbances KW GPS measurements of TEC KW sudden stratospheric warming JO Solnechno-Zemnaya Fizika AU Yasyukevich, A.S. AU Chernigovskaya, M.A. AU Perevalova, N.P. PY 2015 IS 1 PB INFRA-M Academic Publishing LLC.