TY JOUR TI Similarities and differences between regular variations of F2-layer parameters of polar and midlatitude ionosphere in East Siberian sector KW polar and midlatitude ionosphere KW local model KW ionosonde JO Solnechno-Zemnaya Fizika AU Ratovsky, K.G. AU Oinats, A.V. AU Medvedev, A.V. PY 2015 IS 1 PB INFRA-M Academic Publishing LLC.