Angular Correlation Estimates for Ultrahigh Energy Cosmic Rays
  Anisotropy in arrival directions of ultrahigh energy cosmic rays offers the most direct way to search for the sources of these particles. We present estimates of the angular correlation in the HiRes sample of stereo events above 10 EeV, and in the combined sample of HiRes and AGASA events above 40 EeV. 
Chad Finley (for the High Resolution Fly's Eye Collaboration, HiRes)