%0 Journal Article %A A. Arenas %T An arithmetic problem on the sums of three squares %J Acta Arithmetica %D 1988 %P 131-140 %V 51 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-51-2-131-140/ %R 10.4064/aa-51-2-131-140 %G en %F 10_4064_aa_51_2_131_140