2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/11856Three halo finder algorithms - hierarchical friends-of-friends, bound density maxima, and 6D minimum spanning tree - are discussed.4 pages, 2 figures in gif-format, To appear in Proceedings of the Potsdam Cosmology Workshop, "Large Scale Structure: Tracks and Traces", Sept. 15-19, 1997Astrophysicstext