Belinskaya A.Yu, Grekhov O.M. VARIATIONS OF THE CRITICAL FREQUENCY OF THE IONOSPHERIC F2 LAYER DURING THE 23 SOLAR CYCLE.
Shpynev B.G., Oinats A.V., Lebedev V.P., Chernigovskaya M.A., Belinskaya A.Yu. Variations of upper/middle atmosphere parameters with periods of 3-30 days and their sources.
D. Pancheva, P. Mukhtarov, , , Effects of coupling from the lower troposphere to the ionosphere during the January 2009 major stratospheric warming