Altadill, D.; Apostolov, E. M.; Boska, J.; Lastovicka, J.; Sauli, P. Planetary and Gravity Wave Signatures in the F-Region Ionosphere With Impacton Radio Propagation Predictionsand Variability. Ann. Geophys. 2004, 47 (2-3 Sup.). https://doi.org/10.4401/ag-3288.