American Geophysical Union, Journal of Geophysical Research, A6(104), p. 12549-12561, 1999
DOI: 10.1029/1999ja900130
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Evidence is presented for a 22-year cycle in the amplitude of recurrent, near-Earth, near-Ecliptic, galactic cosmic ray modulations during the solar minimum periods in the mid-1950s to mid-1990s. These modulations are ~50% larger during A>0 epochs than during A