21 citations as recorded by crossref.

1. Long-term changes in the dependence of NmF2 on solar flux at Juliusruh M. Tan Jun Rios et al.
2. Plausible effects of equatorial vertical plasma drifts on F2-region sustainable peak electron density in ionospheric environment O. Ehinlafa et al.
3. Reflection of the dynamics of interplanetary space parameters in the maximum observable frequencies on different ionospheric oblique-sounding paths O. Barkhatova
4. Variability of the Critical Frequency foF2 for Equatorial Regions during Solar Cycle’s Minima and Maxima at Ouagadougou and Manila Stations K. M’Bi et al.
5. Response of the mesosphere-thermosphere-ionosphere system to global change - CAWSES-II contribution J. Laštovička et al.
6. Trends in the F2-layer critical frequency from data obtained at the ionospheric station Yakutsk during the period from 1956 to 2017 S. Kobyakova et al.
7. Trends in the Neutral and Ionized Upper Atmosphere J. Laštovička et al.
8. Problems in calculating long-term trends in the upper atmosphere J. Laštovička & Š. Jelínek
9. foF2 Long-Term Trend at a Station Located near the Crest of the Equatorial Ionization Anomaly D. Gnabahou et al.
10. Long-term trends of the F2-region at mid-latitudes in the Southern Hemisphere A. Sharan & S. Kumar
11. Trends in the F2-layer critical frequency from data obtained at the ionospheric station Yakutsk during the period from 1956 to 2017 S. Kobyakova et al.
12. Trends in the F2 ionospheric layer due to long-term variations in the Earth's magnetic field A. Elias
13. Progress in observations and simulations of global change in the upper atmosphere L. Qian et al.
14. A long-term trend in the F2-layer critical frequency as observed at Alma-Ata ionosonde station G. Gordiyenko et al.
15. Long-Term Changes in Ionospheric Climate in Terms of foF2 J. Laštovička
16. Solar activity index for long-term ionospheric forecasts M. Deminov
17. An attempt to study long-term variation of sporadic E layers using neural networks X. Zuo et al.
18. Spatiotemporal dynamics of submeridional and sublatitudinal ionospheric perturbations under different solar-geophysical conditions O. Barkhatova et al.
19. Revealing the classes of ionospheric disturbances on the basis of multiyear data on the critical frequency of the F2 layer N. Barkhatov & O. Barkhatova
20. Global pattern of trends in the upper atmosphere and ionosphere: Recent progress J. Laštovička
21. Modified solar flux index for upper atmospheric applications T. Maruyama