%0 Journal Article %A R. Rado %T Universal graphs and universal functions %J Acta Arithmetica %D 1964 %P 331-340 %V 9 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-9-4-331-340/ %R 10.4064/aa-9-4-331-340 %G en %F 10_4064_aa_9_4_331_340