1. http://www.bnl.gov/RHIC
2. http://lhc-machine-outreach.web.cern.ch/lhc-machine-outreach/
3. Review of Particle Physics
4. Quarks and Leptons: An Introductory Course in Modern;Halzen,1984
5. The data may be found on the web, courtesy of the COMPAS group, IHEP, Protvino, Russia at http://wwwppds.ihsp.su:8001/ppds.html or at http://pdg.lbl.gov/xsect/contents.html. The data is also plotted in the Particle Data Book,