Investigation of disturbances in the E-layer of the ionosphere during flares as a means of diagnosing and making short-term predictions solar proton events
Aa. Nusinov et Oi. Prokopenko, Investigation of disturbances in the E-layer of the ionosphere during flares as a means of diagnosing and making short-term predictions solar proton events, GEOMAG AER, 39(4), 1999, pp. 136-140