Nessie: A rust-powered, fast, flexible, and generalized friends-of-friends galaxy-group finder in R and Python. - Trystan S. Lambert; Aaron S. G. Robotham; Matias Bravo; Claudia del P. Lagos; Rodrigo Tobar; Simon Driver; Adrien Aufan Stoffels d'hautefort (Astron. Comput., 2026)