%0 Journal Article %A A. Sárközy %T On sums and products of residues modulo $p$ %J Acta Arithmetica %D 2005 %P 403-409 %V 118 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa118-4-6/ %R 10.4064/aa118-4-6 %G en %F 10_4064_aa118_4_6