On the possibilities of coordinated ionospheric soundings and GPS measurements by P. Bencze, J. Kalmár, L. Bányai

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Behaviour of the F1-region, and Esand spread-F phenomena at European middle latitudes, particularly under geomagnetic storm conditions by F. Märcz, J. Lastovicka, D. Buresová, P. Bencze

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Long-term trends in the ionosphere and upper atmosphere parameters by A. V. Mikhailov, J. Lastovicka, Lu. Alfonsi, P. Bencze, J. Bremer, N. Rogers

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Connections between whistlers and pulsation activity by J. Verö, J. Verö, J. Verö, B. Zieger, J. Szendröi, M. Vellante, J. Střesğtik, H. Lühr, A. Best, A. Körmendi, J. Lichtenberger, T. Ménesi, P. Bencze, F. Märcz, V. Wesztergom

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