%0 Journal Article %A Arto Salomaa %T On basic groups for the set of functions over a finite domain %J Annales Fennici Mathematici %D 1964 %V 336-344 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1964.338/ %R 10.5186/aasfm.1964.338 %G en %F AFM_1964_336-344_a6