@conference{8898,
  author = {J. Kirk and P. Schneider},
  title = {Cosmic ray acceleration at relativistic shocks},
  year = {1988},
  publisher = {CUP Archive},
  address = {George Mason University, Fairfax, Virginia},
  isbn = {0521342465, 9780521342469},
  note = {JILA Pub. 3493},
}