1. McCracken KG, Beer J (2007) Long-term changes in the cosmic ray intensity at Earth, 1428–2005. J Geophys Res 112:A10101. doi:
10.1029/2006JA012117
2. Beer J, McCracken KG, Abreu J, Heikkilä U, Steinhilber F (2008) Long-term changes in cosmic rays derived from cosmogenic radionuclides. In: Proceedings of 30th International Cosmic Ray Conference 1:765–768
3. Muscheler R, Heikkilä U (2012) Constraints on long-term changes in solar activity from the range of variability of cosmogenic radionuclide records. Astrophys Space Sci Trans 7:355–364. doi:
10.5194/astra-7-355-2011
4. Abreu JA, Beer J, Steinhilber F, Christl M, Kubik PW (2011) 10Be in ice cores and 14C in tree rings: separation of production and climate effects. Space Sci Rev online. doi:
10.1007/s11214-011-9864-y
5. Elsasser W, Ney EP, Winckler JR (1956) Cosmic ray intensity and geomagnetism. Nature 178:1226–1227