%0 Journal Article %A Ajai Choudhry %T Symmetric Diophantine systems %J Acta Arithmetica %D 1991 %P 291-307 %V 59 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-59-3-291-307/ %R 10.4064/aa-59-3-291-307 %G en %F 10_4064_aa_59_3_291_307