%0 Journal Article %A Frieder Grupp %T On zeros of functions satisfying certain differential-difference equations %J Acta Arithmetica %D 1988 %P 247-268 %V 51 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-51-3-247-268/ %R 10.4064/aa-51-3-247-268 %G en %F 10_4064_aa_51_3_247_268