%0 Journal Article %A R. Cook %T Pairs of additive equations IV. Sextic equations %J Acta Arithmetica %D 1983 %P 227-243 %V 43 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-43-3-227-243/ %R 10.4064/aa-43-3-227-243 %G en %F 10_4064_aa_43_3_227_243