%0 Journal Article %A R. Baker %T Square-free points on ellipsoids %J Acta Arithmetica %D 1988 %P 215-219 %V 50 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-50-3-215-219/ %R 10.4064/aa-50-3-215-219 %G en %F 10_4064_aa_50_3_215_219