1. The three hourly range index measuring geomagnetic activity. Terrestrial, Magagnetospheric and Atmospheric;Bartels;Electricity,1992
2. An algorithm for the machine calculation of complex Fourier series;Cooley;Math. Comput.,1965
3. Tempeste, sottotempeste e baie magnetiche;De Santis;Ann. Geofis.,1993
4. Automatic K scaling by means of fractal and harmonic analysis;De Santis;Ann. Geophys.,1992
5. Protocollo Operativo CF05EX;Faggioni,2005