M. A. Zel'Dovich

The spectra of 30-750 keV protons in the recurrent particles fluxes according to the 'Prognoz-4,5' measurements

Background proton fluxes of about 1 MeV in interplanetary space and their relationship with solar activity

Proton fluxes in the 3-10-MeV energy range in a quiet solar-activity period according to Vega 1 and 2 probe data

Recurrent increases of proton intensity according to Prognoz-7 satellite measurements

Particle spectra in quiet-sun conditions and in conditions of solar activity

Low-energy proton fluxes under quiet solar conditions and solar activity

Recurrent intensity increases of low-energy particles, as measured by the Prognoz-3 satellite

Prognoz-3 measurements of recurrent increases in low-energy particle intensities

Spectra of low-energy protons in recurrent increases from Prognoz-4 satellite measurements

Discovery of proton fluxes at 1 AU with energies EP greater than 1-5 MeV accelerated in low-energy flare events