L. Anchordoqui, T. Paul, S. Reucroft, J. Swain; Paul; Reucroft; Swain (2003). "Ultrahigh Energy Cosmic Rays: The state of the art before the Auger Observatory". International Journal of Modern Physics A. 18 (13): 2229–2366. arXiv:hep-ph/0206072. Bibcode:2003IJMPA..18.2229A. doi:10.1142/S0217751X03013879.CS1 maint: multiple names: authors list (link)
cern.ch
public.web.cern.ch
"Facts and figures". The LHC. European Organization for Nuclear Research. 2008. Dicapai pada 17 Februari 2013.
L. Anchordoqui, T. Paul, S. Reucroft, J. Swain; Paul; Reucroft; Swain (2003). "Ultrahigh Energy Cosmic Rays: The state of the art before the Auger Observatory". International Journal of Modern Physics A. 18 (13): 2229–2366. arXiv:hep-ph/0206072. Bibcode:2003IJMPA..18.2229A. doi:10.1142/S0217751X03013879.CS1 maint: multiple names: authors list (link)
gsu.edu
hyperphysics.phy-astr.gsu.edu
Nave, Carl R. "Cosmic rays". HyperPhysics Concepts. Georgia State University. Dicapai pada 17 Februari 2013.
harvard.edu
ui.adsabs.harvard.edu
L. Anchordoqui, T. Paul, S. Reucroft, J. Swain; Paul; Reucroft; Swain (2003). "Ultrahigh Energy Cosmic Rays: The state of the art before the Auger Observatory". International Journal of Modern Physics A. 18 (13): 2229–2366. arXiv:hep-ph/0206072. Bibcode:2003IJMPA..18.2229A. doi:10.1142/S0217751X03013879.CS1 maint: multiple names: authors list (link)
