%0 Journal Article %A Kevin Hutchinson %T Conditions under which $K₂( %J Acta Arithmetica %D 1999 %P 189-199 %V 89 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-89-2-189-199/ %R 10.4064/aa-89-2-189-199 %G en %F 10_4064_aa_89_2_189_199