Citation: Ma. Zeldovich et al., ENERGY-SPECTRUM OF PROTONS AND HE AND THE RATIO H HE IN BACKGROUND FLUXES WITH 1-12 MEV/NUCLON DURING THE SOLAR-ACTIVITY MINIMA BETWEEN 21 AND 22 CYCLES/, Izvestia Akademii nauk SSSR. Seria fiziceskaa, 57(7), 1993, pp. 153-157