%0 Journal Article %A Ronald Burthe %T The average least witness is 2 %J Acta Arithmetica %D 1997 %P 327-341 %V 80 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-80-4-327-341/ %R 10.4064/aa-80-4-327-341 %G en %F 10_4064_aa_80_4_327_341