1. Numerical analysis of foF2 during severe geomagnetic activity at middle latitudes in Europe for application to short-term forecasting;Barbatsi;Memoria,1992
2. Studying the ionospheric storms over Mediterranean area for application to the HF propagation predictions;Barbatsi,1991
3. Numerical analysis of foF2 deviations from a quiet reference as a function of magnetic indices at middle latitudes;Barbatsi,1991
4. Options for generating instantaneous ionospheric maps from measured data;Bradley;Memoria,1992
5. COST 238-PRIME (Prediction and Retrospective Ionospheric Modelling over Europe);Bradley,1993