%0 Journal Article %A Umberto Zannier %T On the number of terms of a composite polynomial %J Acta Arithmetica %D 2007 %P 157-167 %V 127 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa127-2-5/ %R 10.4064/aa127-2-5 %G en %F 10_4064_aa127_2_5