S. Pinter et al., The origin of the variations of the solar wind parameters from radio observations, Laboratorio di Ricerca e Tecnologia per lo Studio del Plasma nello Spazio , LPS-73(27), 1973, pp. 1-20
A new index describing the solar corona activity is defined. This index (called Comprehensive Radio Burstiness Index) takes into account the magnitude and duration of 600 MHz bursts and type II-IV radio bursts. The CRBI is correlated with the solar wind proton parameters observed, near 1 AU, by the spacecraft HEOS-1 and Explorer - 33. The best correlation is found with the kinetic energy flux.