Parallel Halo Finding in N-Body Cosmology Simulations. - David W. Pfitzner; John K. Salmon (KDD, 1996)

Halo World: Tools for Parallel Cluster Finding in Astrophysical N-body Simulations. - David W. Pfitzner; John K. Salmon; Thomas L. Sterling (Data Min. Knowl. Discov., 1997)