%0 Journal Article %A Roy Maltby %T Root systems and the Erdős-Szekeres Problem %J Acta Arithmetica %D 1997 %P 229-245 %V 81 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-81-3-229-245/ %R 10.4064/aa-81-3-229-245 %G de %F 10_4064_aa_81_3_229_245