TY JOUR TI Application of convolution neural networks for critical frequency fₒF2 prediction KW ionosphere KW machine learning KW neural networks KW fₒF2 JO Solar-Terrestrial Physics AU Salimov, B.G. AU Berngardt, O.I. AU Hmelnov, A.E. AU Ratovsky, K.G. AU Kusonsky, O.A. PY 2023 IS 9 PB INFRA-M Academic Publishing LLC.